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Showing 261 - 280 of 501 results

Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data

Che, Erzhuo

;

Kamalou, Sahar

2026-08-01 | PDF

To be able to handle the statewide mobile lidar data ODOT collects efficiently, there is a need for a robust workflow with significant automation that can extract many types of features by effectively leveraging various feature extraction tools and algorithms to support applications. In particular, road characterization has been identified as a key ...

08/17/2026

Supporting Files

Title : Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data Creator(s) : Che, Erzhuo;Kamalou, Sahar;Olsen, Michael;Kenneth, Kenney;Jung, Jaehoon; Corporate Creator(s) : Oregon State University;EZDataMD LLC; Corporate Contributor(s) : Oregon. Department of Transportation. Research Section;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-08-01 Report Number : FHWA-OR-RD-27-05 URL : https://rosap.ntl.bts.gov/view/dot/92961
Che, E., Kamalou, S., Olsen, M., Kenneth, K., & Jung, J. (2026). Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data (Report No. FHWA-OR-RD-27-05). Oregon. Department of Transportation. Research Section. https://rosap.ntl.bts.gov/view/dot/92961

Che, Erzhuo, Sahar Kamalou, Michael Olsen, Kenney Kenneth, and Jaehoon Jung. Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data. Report no. FHWA-OR-RD-27-05. Oregon. Department of Transportation. Research Section, 2026. https://rosap.ntl.bts.gov/view/dot/92961.

Che, Erzhuo, et al. Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data. Oregon. Department of Transportation. Research Section, 2026, Report no. FHWA-OR-RD-27-05, ROSA P. https://rosap.ntl.bts.gov/view/dot/92961.
Export RIS Citation Information. TY - Tech Report AU - Che, Erzhuo AU - Kamalou, Sahar AU - Olsen, Michael AU - Kenneth, Kenney AU - Jung, Jaehoon A2 - Oregon State University A2 - EZDataMD LLC A3 - Oregon. Department of Transportation. Research Section A3 - United States. Department of Transportation. Federal Highway Administration AB - To be able to handle the statewide mobile lidar data ODOT collects efficiently, there is a need for a robust workflow with significant automation that can extract many types of features by effectively leveraging various feature extraction tools and algorithms to support applications. In particular, road characterization has been identified as a key application for information extraction from mobile lidar data. In this literature review, the team first provides a brief overview of the model inventory of roadway elements (MIRE 2.0) to help identify the attributes that are of interest as well as feasible to extract from mobile lidar data. Next, a review of the existing commercial software summarizes the common challenges in using these solutions for feature extraction and characterization tasks. Lastly, the existing work related to road characterization is reviewed covering the topics of ground filtering and road extraction, cross slopes and grades, and horizontal curve, followed by a summary of the benefits of using mobile lidar data as well as the challenges of the existing studies. AN - dot:92961 DA - 2026-08-01 ET - Final Report KW - Laser radar KW - Mobile applications KW - Cloud computing KW - Asset management KW - Prototype tests KW - Literature reviews KW - Automation KW - Algorithms KW - Mobile lidar KW - point cloud KW - feature extraction KW - road characterization LA - English PB - Oregon. Department of Transportation. Research Section PY - 2026 SN - FHWA-OR-RD-27-05 TI - Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92961 ER -
Evaluation of Truck Arrester Beds in Colorado

Outcalt, William (Skip)

2008-01-01 | PDF

In 2006, CDOT initiated development of a specification for aggregates used in truck arrester beds. First, it was necessary to know what was currently in the arrester beds throughout the state. Each bed needed to be evaluated for safety, performance, and maintenance needs. This study evaluated the condition of 13 arrester beds throughout Colorado. B ...

08/17/2026

Title : Evaluation of Truck Arrester Beds in Colorado Creator(s) : Outcalt, William (Skip) Corporate Creator(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2008-01-01 Report Number : CDOT-2008-1 URL : https://rosap.ntl.bts.gov/view/dot/92960
Outcalt, W. (. (2008). Evaluation of Truck Arrester Beds in Colorado (Report No. CDOT-2008-1). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92960

Outcalt, William (Skip). Evaluation of Truck Arrester Beds in Colorado. Report no. CDOT-2008-1. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92960.

Outcalt, William (Skip) Evaluation of Truck Arrester Beds in Colorado. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/92960.
Export RIS Citation Information. TY - Tech Report AU - Outcalt, William (Skip) A2 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - In 2006, CDOT initiated development of a specification for aggregates used in truck arrester beds. First, it was necessary to know what was currently in the arrester beds throughout the state. Each bed needed to be evaluated for safety, performance, and maintenance needs. This study evaluated the condition of 13 arrester beds throughout Colorado. Based on the performance of those arrester beds and the evaluation of materials recommended by other agencies, a specification for truck ramp aggregate was written and approved. AN - dot:92960 DA - 2008-01-01 ET - Final Report KW - Trucks KW - Escape lanes KW - Ramps KW - Aggregates KW - Arrester beds KW - Specifications KW - Evaluation KW - Performance KW - truck escape ramps LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-1 TI - Evaluation of Truck Arrester Beds in Colorado M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92960 ER -
Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions

Crooks, Kevin R. ;

Haas, Chris

2008-03-01 | PDF

This report investigates the impact of highways and landscape connectivity in Colorado. To do so, it describes three complementary research questions. Given the threat of roads to both wildlife populations and human safety, describing the distribution of animal vehicle collisions (AVC) is a necessary step in understanding potential roadway impacts. ...

08/17/2026

Title : Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions Creator(s) : Crooks, Kevin R.;Haas, Chris;Baruch-Mordo, Sharon;Middledorf, Kris;Magle, Seth;Shenk, Tanya;Wilson, Ken;Theobald, Dave; Corporate Creator(s) : Colorado State University;Colorado Division of Wildlife; Corporate Contributor(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch;United States. Department of Transportation. Federal Highway Administration; Published Date : 2008-03-01 Report Number : CDOT-2008-4 URL : https://rosap.ntl.bts.gov/view/dot/92959
Crooks, K. R., Haas, C., Baruch-Mordo, S., Middledorf, K., Magle, S., Shenk, T., Wilson, K., & Theobald, D. (2008). Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions (Report No. CDOT-2008-4). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92959

Crooks, Kevin R., Chris Haas, Sharon Baruch-Mordo, Kris Middledorf, Seth Magle, Tanya Shenk, Ken Wilson, and Dave Theobald. Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions. Report no. CDOT-2008-4. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92959.

Crooks, Kevin R., et al. Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-4, ROSA P. https://rosap.ntl.bts.gov/view/dot/92959.
Export RIS Citation Information. TY - Tech Report AU - Crooks, Kevin R. AU - Haas, Chris AU - Baruch-Mordo, Sharon AU - Middledorf, Kris AU - Magle, Seth AU - Shenk, Tanya AU - Wilson, Ken AU - Theobald, Dave A2 - Colorado State University A2 - Colorado Division of Wildlife A3 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - This report investigates the impact of highways and landscape connectivity in Colorado. To do so, it describes three complementary research questions. Given the threat of roads to both wildlife populations and human safety, describing the distribution of animal vehicle collisions (AVC) is a necessary step in understanding potential roadway impacts. In the first section, hotspots of AVC occurrence on highways throughout Colorado are identified, and the characteristics associated with such areas are described. To address roadway impacts, mitigation efforts are increasingly common, although rigorous assessments of the functionality of such mitigation treatments are relatively rare. The second section reviews research efforts to design and implement field monitoring of roadway-wildlife interactions at three road segments in Colorado slated for construction and installation of wildlife crossing structures. This corresponds to CDOT's Highway Corridor Wildlife Mitigation/Habitat Connectivity Research Study Phases II & III: Development of Mitigation Goals and Pre-Construction Data Collection. AN - dot:92959 DA - 2008-03-01 ET - Final Report KW - Monitoring KW - Highways KW - Underpasses KW - Wildlife crossings KW - Habitat KW - Animal vehicle crashes KW - Traffic mitigation KW - Data collection KW - Field tests KW - lynx monitoring LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-4 TI - Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions M3 - Tech Report N1 - United States N1 - 32.43/32.44 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92959 ER -
Freight Data Synthesis

Ahanotu, Dike ;

Mani, Akshay

2008-04-01 | PDF

The research in this report was designed to collect information on the freight data needed to support transportation planning in Colorado. There were three steps involved in the research for this study. First, the freight-related transportation planning efforts in the State were reviewed. The second step was to research freight planning efforts in ...

08/17/2026

Title : Freight Data Synthesis Creator(s) : Ahanotu, Dike;Mani, Akshay; Corporate Creator(s) : Cambridge Systematics, Inc. Corporate Contributor(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch;United States. Department of Transportation. Federal Highway Administration; Published Date : 2008-04-01 Report Number : CDOT-2008-3 URL : https://rosap.ntl.bts.gov/view/dot/92958
Ahanotu, D., & Mani, A. (2008). Freight Data Synthesis (Report No. CDOT-2008-3). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92958

Ahanotu, Dike and Akshay Mani. Freight Data Synthesis. Report no. CDOT-2008-3. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92958.

Ahanotu, Dike, and Akshay Mani Freight Data Synthesis. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-3, ROSA P. https://rosap.ntl.bts.gov/view/dot/92958.
Export RIS Citation Information. TY - Tech Report AU - Ahanotu, Dike AU - Mani, Akshay A2 - Cambridge Systematics, Inc. A3 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - The research in this report was designed to collect information on the freight data needed to support transportation planning in Colorado. There were three steps involved in the research for this study. First, the freight-related transportation planning efforts in the State were reviewed. The second step was to research freight planning efforts in other states to document the types of freight data that were used and needed for these studies. This step represents the core of the research effort. The third step was to develop recommendations for freight data collection for studies planned in Colorado based on the types of data that were successfully used in other states on similar studies. The primary finding of this research is that there are freight data needs in the State that would significantly improve freight transportation planning. The primary freight data need is improved origin-destination data collected through roadside truck origin-destination surveys on interstates and key freight-intensive state highways in Colorado. This type of data would be beneficial for several types of studies, including corridor studies, truck-rail diversion studies, safety studies, and economic development studies. The research in this study also indicated that there were several freight-related studies that would be beneficial for the State including a freight-focused vehicle classification count program, a truck safety analysis, and a freight-focused economic analysis. This research also identified a freight data collection program for Colorado that includes the development of rough cost estimates for each freight data collection effort that is recommended along with examples of how the freight data can be utilized. AN - dot:92958 DA - 2008-04-01 ET - Final Report KW - Origin and destination KW - Surveys KW - Economic analysis KW - Trucks KW - Urban goods movement KW - Traffic data KW - Vehicle classification KW - Transportation planning KW - Freight transportation KW - truck origin-destination surveys KW - establishment surveys KW - truck safety LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-3 TI - Freight Data Synthesis M3 - Tech Report N1 - United States N1 - 66.20 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92958 ER -
Permeability Research With the ROMUS Air Permeameter

Retzer, Neal

2008-06-01 | PDF

This report evaluates the ROMUS air permeameter and analyzes the permeabilities of Colorado's asphalt pavements. The permeability of an HMA mixture is its ability to resist the passage of air and water through the pavement. Permeability is considered to be a large factor in the deterioration of Colorado's pavements because of the number of freeze-t ...

08/17/2026

Title : Permeability Research With the ROMUS Air Permeameter Creator(s) : Retzer, Neal Corporate Creator(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2008-06-01 Report Number : CDOT-2008-5 URL : https://rosap.ntl.bts.gov/view/dot/92957
Retzer, N. (2008). Permeability Research With the ROMUS Air Permeameter (Report No. CDOT-2008-5). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92957

Retzer, Neal. Permeability Research With the ROMUS Air Permeameter. Report no. CDOT-2008-5. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92957.

Retzer, Neal Permeability Research With the ROMUS Air Permeameter. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-5, ROSA P. https://rosap.ntl.bts.gov/view/dot/92957.
Export RIS Citation Information. TY - Tech Report AU - Retzer, Neal A2 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - This report evaluates the ROMUS air permeameter and analyzes the permeabilities of Colorado's asphalt pavements. The permeability of an HMA mixture is its ability to resist the passage of air and water through the pavement. Permeability is considered to be a large factor in the deterioration of Colorado's pavements because of the number of freeze-thaw cycles the Rocky Mountain Region experiences over the course of a year. Since the 1950s, asphalt pavement permeability has been recognized as a factor that leads to degradation of pavements. Permeability concerns have resurfaced with the emergence of the Superpave design method. Many agencies and research organizations have recently conducted studies and devised various types of apparatus to measure permeability. Previous studies have identified a number of variables that affect permeability such as lift thickness, nominal maximum aggregate size (NMAS), and the coarse or fine gradation characteristic. This study analyzed some of those same variables, as well as the use of pneumatic tire rollers during the compaction process. Other studies found differences between different NMASs and between coarse and fine gradations; this study found little or no difference between those variables. There are, however, similar trends between this study and others regarding permeability versus density trend lines. The use of pneumatic tire rollers was identified in this study as the largest factor impacting permeability. Other variables have been proven to influence permeability, but the largest difference was between projects that used a pneumatic tire roller and projects that did not use this type of roller for compaction. AN - dot:92957 DA - 2008-06-01 ET - Final Report KW - Hot mix asphalt KW - Tires KW - Asphalt pavements KW - Permeability KW - Rollers KW - Compaction KW - Freeze thaw tests KW - Fine aggregates KW - pneumatic tire rollers KW - rubber tire rollers KW - asphalt mats KW - asphalt pavement permeability LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-5 TI - Permeability Research With the ROMUS Air Permeameter M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92957 ER -
Areawide Coordinated Cumulative Effects Analysis - Phase 1

Muller, Brian ;

Johnson, Lynn

2008-07-01 | PDF

The Areawide Coordinated Cumulative Effects Analysis (ACCEA) project evaluated whether and how a spatial accounting approach can be used to identify the cumulative impacts on the environment that result from the incremental impacts of multiple transportation and other projects, and related urbanization at a regional scale. Spatial accounting method ...

08/17/2026

Title : Areawide Coordinated Cumulative Effects Analysis - Phase 1 Creator(s) : Muller, Brian;Johnson, Lynn;Wyckoff, John;Nuszdorfer, Fred; Corporate Creator(s) : University of Colorado at Denver Corporate Contributor(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch;United States. Department of Transportation. Federal Highway Administration; Published Date : 2008-07-01 Report Number : CDOT-2008-6 URL : https://rosap.ntl.bts.gov/view/dot/92956
Muller, B., Johnson, L., Wyckoff, J., & Nuszdorfer, F. (2008). Areawide Coordinated Cumulative Effects Analysis - Phase 1 (Report No. CDOT-2008-6). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92956

Muller, Brian, Lynn Johnson, John Wyckoff, and Fred Nuszdorfer. Areawide Coordinated Cumulative Effects Analysis - Phase 1. Report no. CDOT-2008-6. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92956.

Muller, Brian, et al. Areawide Coordinated Cumulative Effects Analysis - Phase 1. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-6, ROSA P. https://rosap.ntl.bts.gov/view/dot/92956.
Export RIS Citation Information. TY - Tech Report AU - Muller, Brian AU - Johnson, Lynn AU - Wyckoff, John AU - Nuszdorfer, Fred A2 - University of Colorado at Denver A3 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - The Areawide Coordinated Cumulative Effects Analysis (ACCEA) project evaluated whether and how a spatial accounting approach can be used to identify the cumulative impacts on the environment that result from the incremental impacts of multiple transportation and other projects, and related urbanization at a regional scale. Spatial accounting methods were employed to inventory improvement or decline in the quality of key resources over multiple time periods, jurisdictions and projects. The tools of spatial accounting include (1) data typically housed in a geographic information system (GIS); (2) models for the evaluation of environmental effects resulting from transportation projects and programs; and (3) metrics such as indicators or thresholds, which can be used to assess the importance of change in resource qualities. The ACCEA project addressed a broad spectrum of environmental resources of concern, including land use and open space, and biological, water, cultural and community resources. Fourteen distinct resource areas were addressed during seven workshops held with resource experts representing transportation, environmental, and planning agencies and interest groups. A demonstration project was conducted which focused on land use change, habitat and water quality across the Denver metropolitan region. GIS and remote sensing tools were demonstrated to provide the means for data and models integration, thus providing a technical foundation for characterizing environmental effects. ACCEA was concluded to be feasible and can provide valuable support to both project-specific assessments of cumulative impacts as well as regional accounting of environmental resources relevant to transportation planning. AN - dot:92956 DA - 2008-07-01 ET - Final Report KW - Environmental impacts KW - Environmental policy KW - Environmental protection KW - Geographic information systems KW - Habitat KW - Land use KW - Accounting KW - Endangered species KW - Water quality KW - Water resources KW - Quantitative metrics KW - Urban areas KW - Transportation planning KW - Spatial analysis KW - National Environmental Policy Act (NEPA) KW - habitat suitability KW - regional accounting KW - threatened and endangered species KW - thresholds LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-6 TI - Areawide Coordinated Cumulative Effects Analysis - Phase 1 M3 - Tech Report N1 - United States N1 - 34.70 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92956 ER -
Development of Alternative Desert Tortoise Crossing Criteria and Designs: Final Design Report, Final Design Plan Set and Structure List, Final Cost Estimate, and Final Notes to Specifications

Nussbaumer, Matthew ;

Hidalgo, Keith

2026-06-01 | PDF

The primary goal of this project is to improve desert tortoise connectivity and crossings by developing creative site-specific designs, including implementation-ready plans, specifications, and estimates for the retrofit of four culverts along SR160. The Desert Conservation Program (DCP) considers the selected culverts as grades 3 or 5 which charac ...

08/17/2026

Title : Development of Alternative Desert Tortoise Crossing Criteria and Designs: Final Design Report, Final Design Plan Set and Structure List, Final Cost Estimate, and Final Notes to Specifications Creator(s) : Nussbaumer, Matthew;Hidalgo, Keith;Ansell, Eden; Corporate Creator(s) : AtkinsRéalis USA Inc. Corporate Contributor(s) : Nevada. Department of Transportation Published Date : 2026-06-01 Report Number : 494-24-803 URL : https://rosap.ntl.bts.gov/view/dot/92955
Nussbaumer, M., Hidalgo, K., & Ansell, E. (2026). Development of Alternative Desert Tortoise Crossing Criteria and Designs: Final Design Report, Final Design Plan Set and Structure List, Final Cost Estimate, and Final Notes to Specifications (Report No. 494-24-803). Nevada Department of Transportation. https://rosap.ntl.bts.gov/view/dot/92955

Nussbaumer, Matthew, Keith Hidalgo, and Eden Ansell. Development of Alternative Desert Tortoise Crossing Criteria and Designs: Final Design Report, Final Design Plan Set and Structure List, Final Cost Estimate, and Final Notes to Specifications. Report no. 494-24-803. Nevada Department of Transportation, 2026. https://rosap.ntl.bts.gov/view/dot/92955.

Nussbaumer, Matthew, et al. Development of Alternative Desert Tortoise Crossing Criteria and Designs: Final Design Report, Final Design Plan Set and Structure List, Final Cost Estimate, and Final Notes to Specifications. Nevada Department of Transportation, 2026, Report no. 494-24-803, ROSA P. https://rosap.ntl.bts.gov/view/dot/92955.
Export RIS Citation Information. TY - Tech Report AU - Nussbaumer, Matthew AU - Hidalgo, Keith AU - Ansell, Eden A2 - AtkinsRéalis USA Inc. A3 - Nevada. Department of Transportation AB - The primary goal of this project is to improve desert tortoise connectivity and crossings by developing creative site-specific designs, including implementation-ready plans, specifications, and estimates for the retrofit of four culverts along SR160. The Desert Conservation Program (DCP) considers the selected culverts as grades 3 or 5 which characterizes the locations as either impassable or with conditions that are either difficult and/or hazardous for desert tortoise passage. The goals/deliverables for this Project are:• Identify four culvert crossings along Nevada State Route 160 (SR160) to evaluate and retrofit into desert tortoise culvert crossings with minimal to low maintenance requirements• Obtain topographical surveys to develop designs and plans• Produce final report documents that provide details and a summary of the design efforts performed• Provide implementation-ready construction plans, specifications, and cost estimates. AN - dot:92955 DA - 2026-06-01 ET - Final Report (3, 2025 to June 30, 2026) KW - Habitat KW - Wildlife crossings KW - Design KW - Bridges and culverts KW - Topology KW - Estimates KW - Implementation KW - Maintenance KW - Deserts KW - Literature reviews KW - Desert Tortoise LA - English PB - Nevada Department of Transportation PY - 2026 SN - 494-24-803 TI - Development of Alternative Desert Tortoise Crossing Criteria and Designs: Final Design Report, Final Design Plan Set and Structure List, Final Cost Estimate, and Final Notes to Specifications M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92955 ER -
Aircraft Icing Handbook, Volume 3 of 3

Heinrich, A. ;

Ross, R.

1991-03-01 | PDF

The design and validation of adequate aircraft ice protection has evolved into a specialized and technically complex area where many engineering disciplines are involved; namely, aeronautical, electrical, mechanical, electronics, chemical simulations, mathematical modeling, airframe/engine systems design, atmospheric physics, and meteorology. Resea ...

08/17/2026

Title : Aircraft Icing Handbook, Volume 3 of 3 Creator(s) : Heinrich, A.;Ross, R.;Zumwalt, G. W.;Provorse, J.;Padmanabhan, V.;Thompson, J.;Riley, J.; Corporate Creator(s) : Gates Learjet Corporation Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1991-03-01 Report Number : DOT/FAA/CT-88/8-3 URL : https://rosap.ntl.bts.gov/view/dot/92954
Heinrich, A., Ross, R., Zumwalt, G. W., Provorse, J., Padmanabhan, V., Thompson, J., & Riley, J. (1991). Aircraft Icing Handbook, Volume 3 of 3 (Report No. DOT/FAA/CT-88/8-3). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92954

Heinrich, A., R. Ross, G. W. Zumwalt, J. Provorse, V. Padmanabhan, J. Thompson, and J. Riley. Aircraft Icing Handbook, Volume 3 of 3. Report no. DOT/FAA/CT-88/8-3. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1991. https://rosap.ntl.bts.gov/view/dot/92954.

Heinrich, A., et al. Aircraft Icing Handbook, Volume 3 of 3. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1991, Report no. DOT/FAA/CT-88/8-3, ROSA P. https://rosap.ntl.bts.gov/view/dot/92954.
Export RIS Citation Information. TY - Manual AU - Heinrich, A. AU - Ross, R. AU - Zumwalt, G. W. AU - Provorse, J. AU - Padmanabhan, V. AU - Thompson, J. AU - Riley, J. A2 - Gates Learjet Corporation A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - The design and validation of adequate aircraft ice protection has evolved into a specialized and technically complex area where many engineering disciplines are involved; namely, aeronautical, electrical, mechanical, electronics, chemical simulations, mathematical modeling, airframe/engine systems design, atmospheric physics, and meteorology. Research advances in any one discipline have a direct effect on updating the procedural technology used in the design and validation of ice protection configurations, equipment, and systems. Periodically the Federal Aviation Administration (FAA) provides documentation to assist regulatory certification teams and industry design engineers in standardizing testing and validating procedures. Examples of such documentation are "Engineering Summary of Airframe Icing Technical Data," FAA Report No. ADS-4 dated December 1968, and "Engineering Summary of Powerplant Icing Technical Data," FAA Report No. RD-77-76 dated July 1977. Although most of the information contained in these reports is still valid, some is outdated, and more usable information is now available through recent research and experience. Therefore, this work was directed towards developing an updated and more comprehensive combined version of Report ADS-4 and RD-77-76 that includes reference material on ground and airborne icing facilities, simulation procedures, and analytical techniques. This document represents all types and classes of aircraft and is intended as a working tool for the designer and analyst of ice protection systems. AN - dot:92954 DA - 1991-03-01 ET - Volume 3 of 3 KW - Airplanes KW - Deicing chemicals KW - Handbooks KW - Ice prevention KW - Manuals LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1991 SN - DOT/FAA/CT-88/8-3 TI - Aircraft Icing Handbook, Volume 3 of 3 M3 - Manual N1 - United States N1 - DTFA03-85-C-00007 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92954 ER -
Aircraft Icing Handbook, Volume 2 of 3

Heinrich, A. ;

Ross, R.

1991-03-01 | PDF

The design and validation of adequate aircraft ice protection has evolved into a specialized and technically complex area where many engineering disciplines are involved; namely, aeronautical, electrical, mechanical, electronics, chemical simulations, mathematical modeling, airframe/engine systems design, atmospheric physics, and meteorology. Resea ...

08/17/2026

Title : Aircraft Icing Handbook, Volume 2 of 3 Creator(s) : Heinrich, A.;Ross, R.;Zumwalt, G. W.;Provorse, J.;Padmanabhan, V.;Thompson, J.;Riley, J.; Corporate Creator(s) : Gates Learjet Corporation Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1991-03-01 Report Number : DOT/FAA/CT-88/8-2 URL : https://rosap.ntl.bts.gov/view/dot/92953
Heinrich, A., Ross, R., Zumwalt, G. W., Provorse, J., Padmanabhan, V., Thompson, J., & Riley, J. (1991). Aircraft Icing Handbook, Volume 2 of 3 (Report No. DOT/FAA/CT-88/8-2). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92953

Heinrich, A., R. Ross, G. W. Zumwalt, J. Provorse, V. Padmanabhan, J. Thompson, and J. Riley. Aircraft Icing Handbook, Volume 2 of 3. Report no. DOT/FAA/CT-88/8-2. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1991. https://rosap.ntl.bts.gov/view/dot/92953.

Heinrich, A., et al. Aircraft Icing Handbook, Volume 2 of 3. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1991, Report no. DOT/FAA/CT-88/8-2, ROSA P. https://rosap.ntl.bts.gov/view/dot/92953.
Export RIS Citation Information. TY - Manual AU - Heinrich, A. AU - Ross, R. AU - Zumwalt, G. W. AU - Provorse, J. AU - Padmanabhan, V. AU - Thompson, J. AU - Riley, J. A2 - Gates Learjet Corporation A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - The design and validation of adequate aircraft ice protection has evolved into a specialized and technically complex area where many engineering disciplines are involved; namely, aeronautical, electrical, mechanical, electronics, chemical simulations, mathematical modeling, airframe/engine systems design, atmospheric physics, and meteorology. Research advances in any one discipline have a direct effect on updating the procedural technology used in the design and validation of ice protection configurations, equipment, and systems. Periodically the Federal Aviation Administration (FAA) provides documentation to assist regulatory certification teams and industry design engineers in standardizing testing and validating procedures. Examples of such documentation are "Engineering Summary of Airframe Icing Technical Data," FAA Report No. ADS-4 dated December 1968, and "Engineering Summary of Powerplant Icing Technical Data," FAA Report No. RD-77-76 dated July 1977. Although most of the information contained in these reports is still valid, some is outdated, and more usable information is now available through recent research and experience. Therefore, this work was directed towards developing an updated and more comprehensive combined version of Report ADS-4 and RD-77-76 that includes reference material on ground and airborne icing facilities, simulation procedures, and analytical techniques. This document represents all types and classes of aircraft and is intended as a working tool for the designer and analyst of ice protection systems. AN - dot:92953 DA - 1991-03-01 ET - Volume 2 of 3 KW - Airplanes KW - Deicing chemicals KW - Handbooks KW - Ice prevention KW - Manuals LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1991 SN - DOT/FAA/CT-88/8-2 TI - Aircraft Icing Handbook, Volume 2 of 3 M3 - Manual N1 - United States N1 - DTFA03-85-C-00007 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92953 ER -
Aircraft Icing Handbook, Volume 1 of 3

Heinrich, A. ;

Ross, R.

1991-03-01 | PDF

The design and validation of adequate aircraft ice protection has evolved into a specialized and technically complex area where many engineering disciplines are involved; namely, aeronautical, electrical, mechanical, electronics, chemical simulations, mathematical modeling, airframe/engine systems design, atmospheric physics, and meteorology. Resea ...

08/17/2026

Title : Aircraft Icing Handbook, Volume 1 of 3 Creator(s) : Heinrich, A.;Ross, R.;Zumwalt, G. W.;Provorse, J.;Padmanabhan, V.;Thompson, J.;Riley, J.; Corporate Creator(s) : Gates Learjet Corporation Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1991-03-01 Report Number : DOT/FAA/CT-88/8-1 URL : https://rosap.ntl.bts.gov/view/dot/92952
Heinrich, A., Ross, R., Zumwalt, G. W., Provorse, J., Padmanabhan, V., Thompson, J., & Riley, J. (1991). Aircraft Icing Handbook, Volume 1 of 3 (Report No. DOT/FAA/CT-88/8-1). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92952

Heinrich, A., R. Ross, G. W. Zumwalt, J. Provorse, V. Padmanabhan, J. Thompson, and J. Riley. Aircraft Icing Handbook, Volume 1 of 3. Report no. DOT/FAA/CT-88/8-1. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1991. https://rosap.ntl.bts.gov/view/dot/92952.

Heinrich, A., et al. Aircraft Icing Handbook, Volume 1 of 3. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1991, Report no. DOT/FAA/CT-88/8-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/92952.
Export RIS Citation Information. TY - Manual AU - Heinrich, A. AU - Ross, R. AU - Zumwalt, G. W. AU - Provorse, J. AU - Padmanabhan, V. AU - Thompson, J. AU - Riley, J. A2 - Gates Learjet Corporation A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - The design and validation of adequate aircraft ice protection has evolved into a specialized and technically complex area where many engineering disciplines are involved; namely, aeronautical, electrical, mechanical, electronics, chemical simulations, mathematical modeling, airframe/engine systems design, atmospheric physics, and meteorology. Research advances in any one discipline have a direct effect on updating the procedural technology used in the design and validation of ice protection configurations, equipment, and systems. Periodically the Federal Aviation Administration (FAA) provides documentation to assist regulatory certification teams and industry design engineers in standardizing testing and validating procedures. Examples of such documentation are "Engineering Summary of Airframe Icing Technical Data," FAA Report No. ADS-4 dated December 1968, and "Engineering Summary of Powerplant Icing Technical Data," FAA Report No. RD-77-76 dated July 1977. Although most of the information contained in these reports is still valid, some is outdated, and more usable information is now available through recent research and experience. Therefore, this work was directed towards developing an updated and more comprehensive combined version of Report ADS-4 and RD-77-76 that includes reference material on ground and airborne icing facilities, simulation procedures, and analytical techniques. This document represents all types and classes of aircraft and is intended as a working tool for the designer and analyst of ice protection systems. AN - dot:92952 DA - 1991-03-01 ET - Volume 1 of 3 KW - Airplanes KW - Deicing chemicals KW - Handbooks KW - Ice prevention KW - Manuals LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1991 SN - DOT/FAA/CT-88/8-1 TI - Aircraft Icing Handbook, Volume 1 of 3 M3 - Manual N1 - United States N1 - DTFA03-85-C-00007 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92952 ER -
Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport

Barab, J. D. ;

Page, Richard

1988-08-01 | PDF

An operational test and evaluation of enhancements to the 11-station Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport, Denver, Colorado, was conducted during the period August 3 to September 4, 1988. Enhancements included a 12th remote station for gathering wind data, a more sophisticated wind shear microburst detection ...

08/17/2026

Title : Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport Creator(s) : Barab, J. D.;Page, Richard;Rosenburg, Bruce L.;Zurinskas, Thomas E.;Smythe, Glenn R.; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration Published Date : 1988-08-01 Report Number : DOT/FAA/PS-88/14, DOT/FAA/CT-88/6 URL : https://rosap.ntl.bts.gov/view/dot/92951
Barab, J. D., Page, R., Rosenburg, B. L., Zurinskas, T. E., & Smythe, G. R. (1988). Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport (Report No. DOT/FAA/PS-88/14, DOT/FAA/CT-88/6). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92951

Barab, J. D., Richard Page, Bruce L. Rosenburg, Thomas E. Zurinskas, and Glenn R. Smythe. Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport. Report no. DOT/FAA/PS-88/14, DOT/FAA/CT-88/6. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988. https://rosap.ntl.bts.gov/view/dot/92951.

Barab, J. D., et al. Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988, Report no. DOT/FAA/PS-88/14, DOT/FAA/CT-88/6, ROSA P. https://rosap.ntl.bts.gov/view/dot/92951.
Export RIS Citation Information. TY - Tech Report AU - Barab, J. D. AU - Page, Richard AU - Rosenburg, Bruce L. AU - Zurinskas, Thomas E. AU - Smythe, Glenn R. A2 - United States. Department of Transportation. Federal Aviation Administration. Technical Center A3 - United States. Department of Transportation. Federal Aviation Administration AB - An operational test and evaluation of enhancements to the 11-station Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport, Denver, Colorado, was conducted during the period August 3 to September 4, 1988. Enhancements included a 12th remote station for gathering wind data, a more sophisticated wind shear microburst detection (WSMD) algorithm, a Digital Equipment Corporation (DEC) PDP 11-73 computer, a DEC VT-240 Cathode Ray Tube (CRT) Display, and an LLWAS message display format, the latter two for local controller use in the air traffic control (ATC) tower cab. Two sets of objectives were associated with this LUWAS evaluation: meteorological objectives, which stressed determining the effectiveness of the WSMD algorithm in establishing the presence of hazardous wind shears on or near the airport and reducing the false alarm rate; and human factors objectives, which were concerned with evaluating the usefulness and effectiveness of the CRT display, the display message, and the local controller's message to pilots. This report discusses the methodology and dual scientific analyses carried out, and provides detailed results with conclusions and recommendations. Based on the conclusions, it was recommended that the WSMD algorithm remain as an operational constituent of the Denver LUWAS and that human factors considerations be further explored in improving the controller LUWAS interface. AN - dot:92951 DA - 1988-08-01 ET - Final Report KW - Air traffic control KW - Airports KW - Shear strength KW - Warning systems KW - Wind LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988 SN - DOT/FAA/PS-88/14, DOT/FAA/CT-88/6 TI - Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92951 ER -
Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines

Ferrara, Augusto

1988-06-01 | PDF

This report describes the results of a study into the behavior of several alternate fuels that are under consideration for use in general aviation aircraft engines. The study consisted of a literature search and engine tests using a dynamometer. The literature search identified material compatibility problems and possible solutions to these problem ...

08/17/2026

Title : Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines Creator(s) : Ferrara, Augusto Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-06-01 Report Number : DOT/FAA/CT88/05 URL : https://rosap.ntl.bts.gov/view/dot/92950
Ferrara, A. (1988). Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines (Report No. DOT/FAA/CT88/05). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92950

Ferrara, Augusto. Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines. Report no. DOT/FAA/CT88/05. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988. https://rosap.ntl.bts.gov/view/dot/92950.

Ferrara, Augusto Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988, Report no. DOT/FAA/CT88/05, ROSA P. https://rosap.ntl.bts.gov/view/dot/92950.
Export RIS Citation Information. TY - Tech Report AU - Ferrara, Augusto A2 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report describes the results of a study into the behavior of several alternate fuels that are under consideration for use in general aviation aircraft engines. The study consisted of a literature search and engine tests using a dynamometer. The literature search identified material compatibility problems and possible solutions to these problems. For the engine tests, a number of gasoline/alcohol blends were prepared using both ethanol and methanol in varying concentrations and the vapor-lock behavior was identified. Neat alcohols and methyl-tertiary-butyl ether were also used in the engine, and special operational conditions and problems were identified. AN - dot:92950 DA - 1988-06-01 ET - Final Report KW - Airplanes KW - Fuel systems KW - Fuels KW - Gasohol KW - Ethanol KW - Vapor lock KW - Alternate fuels KW - Spark ignition engines LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988 SN - DOT/FAA/CT88/05 TI - Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92950 ER -
Report on Surgical Implants

Poelma, Christine

1988-01-01 | PDF

Terrorist activity at airports or on aircraft necessitates increasingly sensitive concourse detection systems. The development of a better system requires knowledge about those devices or items that are not weapons that are on a person going through detection system. This report is an attempt at finding information of interest regarding surgical im ...

08/17/2026

Title : Report on Surgical Implants Creator(s) : Poelma, Christine Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration Published Date : 1988-01-01 URL : https://rosap.ntl.bts.gov/view/dot/92949
Poelma, C. (1988). Report on Surgical Implants. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92949

Poelma, Christine. Report on Surgical Implants. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988. https://rosap.ntl.bts.gov/view/dot/92949.

Poelma, Christine Report on Surgical Implants. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988, ROSA P. https://rosap.ntl.bts.gov/view/dot/92949.
Export RIS Citation Information. TY - Tech Report AU - Poelma, Christine A2 - United States. Department of Transportation. Federal Aviation Administration AB - Terrorist activity at airports or on aircraft necessitates increasingly sensitive concourse detection systems. The development of a better system requires knowledge about those devices or items that are not weapons that are on a person going through detection system. This report is an attempt at finding information of interest regarding surgical implants. The types of implants available, materials involved, and other physical characteristics of the implants were found by contacting manufacturers, associations, and hospitals. People sent various pieces of literature in response to requests including brochures, xeroxes of templates of implants and whole ordering catalogs. This literature is referred to in each category of implants. Because the Depuy catalog creates a clear understanding of the types and characteristics of implants, xeroxed pages from this catalog are included throughout the report to supplement a concise definition for each system. AN - dot:92949 DA - 1988-01-01 KW - Detectors by object of detection KW - Detectors KW - Weapons KW - Security KW - Surgery LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988 TI - Report on Surgical Implants M3 - Tech Report N1 - United States N1 - ACT-588 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92949 ER -
Aircraft Electrical Wet-Wire Arc Tracking

Cahill, Patricia ;

Dailey, James H.

1988-08-01 | PDF

Electrical wet-wire arc tracking is a phenomenon that has been known for many years. This can occur when leakage currents on a wet insulation surface are great enough to vaporize the moisture, resulting in the formation of dry spots. These dry spots offer a high amount of resistance! to current flow. In turn, an induced voltage will develop across ...

08/17/2026

Title : Aircraft Electrical Wet-Wire Arc Tracking Creator(s) : Cahill, Patricia;Dailey, James H.; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-08-01 Report Number : DOT/FAA/CT-88/4 URL : https://rosap.ntl.bts.gov/view/dot/92948
Cahill, P., & Dailey, J. H. (1988). Aircraft Electrical Wet-Wire Arc Tracking (Report No. DOT/FAA/CT-88/4). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92948

Cahill, Patricia and James H. Dailey. Aircraft Electrical Wet-Wire Arc Tracking. Report no. DOT/FAA/CT-88/4. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988. https://rosap.ntl.bts.gov/view/dot/92948.

Cahill, Patricia, and James H. Dailey Aircraft Electrical Wet-Wire Arc Tracking. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988, Report no. DOT/FAA/CT-88/4, ROSA P. https://rosap.ntl.bts.gov/view/dot/92948.
Export RIS Citation Information. TY - Tech Report AU - Cahill, Patricia AU - Dailey, James H. A2 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - Electrical wet-wire arc tracking is a phenomenon that has been known for many years. This can occur when leakage currents on a wet insulation surface are great enough to vaporize the moisture, resulting in the formation of dry spots. These dry spots offer a high amount of resistance! to current flow. In turn, an induced voltage will develop across these spots and result in the occurrence of small surface discharges. Initially, these discharges will appear as scintillations at the insulation surface. These discharges produce highly localized temperatures on the order of 10000 Centigrade (C). Temperatures of this magnitude will cause thermal degradation of the insulation material, the nature of which depends on the insulation material used. AN - dot:92948 DA - 1988-08-01 ET - Final Report KW - Electric wire KW - Wire KW - Fault location KW - Aircraft KW - Carbonization KW - Electrical conductivity KW - Fire LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988 SN - DOT/FAA/CT-88/4 TI - Aircraft Electrical Wet-Wire Arc Tracking M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92948 ER -
Lightning Simulation Test Technique Evaluation

Cooley, William W. ;

Shortess, Deborah L.

1988-10-01 | PDF

This report documents the results of four separate lightning simulation tests on a specially designed test bed aircraft. The simulation techniques used are low-level swept continuous wave, low-level fast rise pulse, moderate-level pulse, and shock-excitation. The test bed is made up of advanced composite materials with built-in lightning protection ...

08/17/2026

Title : Lightning Simulation Test Technique Evaluation Creator(s) : Cooley, William W.;Shortess, Deborah L.; Corporate Creator(s) : Science and Engineering Associates, Inc Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-10-01 Report Number : DOT/FAA/CT-87/38 URL : https://rosap.ntl.bts.gov/view/dot/92947
Cooley, W. W., & Shortess, D. L. (1988). Lightning Simulation Test Technique Evaluation (Report No. DOT/FAA/CT-87/38). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92947

Cooley, William W. and Deborah L. Shortess. Lightning Simulation Test Technique Evaluation. Report no. DOT/FAA/CT-87/38. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988. https://rosap.ntl.bts.gov/view/dot/92947.

Cooley, William W., and Deborah L. Shortess Lightning Simulation Test Technique Evaluation. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988, Report no. DOT/FAA/CT-87/38, ROSA P. https://rosap.ntl.bts.gov/view/dot/92947.
Export RIS Citation Information. TY - Tech Report AU - Cooley, William W. AU - Shortess, Deborah L. A2 - Science and Engineering Associates, Inc A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report documents the results of four separate lightning simulation tests on a specially designed test bed aircraft. The simulation techniques used are low-level swept continuous wave, low-level fast rise pulse, moderate-level pulse, and shock-excitation. The test bed is made up of advanced composite materials with built-in lightning protection and electrical equipment installations. This configuration is electrically and geometrically representative of a general aviation heavy single engine aircraft. Comparative data was developed to determine the effectiveness of the four test methods and used to quantify the differences between them. Analysis necessary to extrapolate the results of the tests to the severe lightning environment is discussed. Predicted values from computer models are compared with test results. AN - dot:92947 DA - 1988-10-01 ET - Final Report KW - Aircraft KW - Lightning KW - Simulation KW - Test beds KW - Test procedures LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988 SN - DOT/FAA/CT-87/38 TI - Lightning Simulation Test Technique Evaluation M3 - Tech Report N1 - United States N1 - DTFA03-84-C-00064 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92947 ER -
De-Icing of Aircraft Turbine Engine Inlets

Rosenthal, H. A. ;

Nelepovitz, D. O.

1988-06-01 | PDF

This document presents the results of an FAA investigation to determine the effects of using de-icing, as opposed to anti-icing, in aircraft turbine engine inlets. A literature search was conducted. Ice protection equipment technology was assessed. This report describes the icing/de-icing process, discusses de-ice system operation and performance a ...

08/17/2026

Title : De-Icing of Aircraft Turbine Engine Inlets Creator(s) : Rosenthal, H. A.;Nelepovitz, D. O.;Rockholt, H. M.; Corporate Creator(s) : Rohr Industries, Inc Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-06-01 Report Number : DOT/FAA/cr-87/~ URL : https://rosap.ntl.bts.gov/view/dot/92946
Rosenthal, H. A., Nelepovitz, D. O., & Rockholt, H. M. (1988). De-Icing of Aircraft Turbine Engine Inlets (Report No. DOT/FAA/cr-87/~). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92946

Rosenthal, H. A., D. O. Nelepovitz, and H. M. Rockholt. De-Icing of Aircraft Turbine Engine Inlets. Report no. DOT/FAA/cr-87/~. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988. https://rosap.ntl.bts.gov/view/dot/92946.

Rosenthal, H. A., et al. De-Icing of Aircraft Turbine Engine Inlets. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988, Report no. DOT/FAA/cr-87/~, ROSA P. https://rosap.ntl.bts.gov/view/dot/92946.
Export RIS Citation Information. TY - Tech Report AU - Rosenthal, H. A. AU - Nelepovitz, D. O. AU - Rockholt, H. M. A2 - Rohr Industries, Inc A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center A4 - Frings, Gary AB - This document presents the results of an FAA investigation to determine the effects of using de-icing, as opposed to anti-icing, in aircraft turbine engine inlets. A literature search was conducted. Ice protection equipment technology was assessed. This report describes the icing/de-icing process, discusses de-ice system operation and performance and ice detector characteristics, and presents a method for determining the effects of the de-icing process on the turbine engine and its associated induction system. AN - dot:92946 DA - 1988-06-01 ET - Final Report KW - Airplanes KW - Deicing chemicals KW - Ice prevention KW - Turbines LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988 SN - DOT/FAA/cr-87/~ TI - De-Icing of Aircraft Turbine Engine Inlets M3 - Tech Report N1 - United States N1 - DTFA03-86-C-0050 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92946 ER -
New York TRACON Demonstration of Program Recoding Software Translation and Verification Methodology Document

United States. Department of Transportation. Federal Aviation Administration. Technical Center ...

1987-08-01 | PDF

This document is the concluding report in a project whose objective was to convert in a reasonably short period of time, machine dependent software to a higher order language capable of running on any general purpose computer. A subset of the New York (N. Y.) TRACON (version A5.04) software was chosen for conversion, specifically, the tracking algo ...

08/17/2026

Title : New York TRACON Demonstration of Program Recoding Software Translation and Verification Methodology Document Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center;Data Transformation Corporation; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration Published Date : 1987-08-01 Report Number : DOT/FAA/CT-87/33 URL : https://rosap.ntl.bts.gov/view/dot/92945
United States. Department of Transportation. Federal Aviation Administration. Technical Center, & Data Transformation Corporation (1987). New York TRACON Demonstration of Program Recoding Software Translation and Verification Methodology Document (Report No. DOT/FAA/CT-87/33). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92945

United States. Department of Transportation. Federal Aviation Administration. Technical Center and Data Transformation Corporation. New York TRACON Demonstration of Program Recoding Software Translation and Verification Methodology Document. Report no. DOT/FAA/CT-87/33. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987. https://rosap.ntl.bts.gov/view/dot/92945.

United States. Department of Transportation. Federal Aviation Administration. Technical Center, et al. New York TRACON Demonstration of Program Recoding Software Translation and Verification Methodology Document. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987, Report no. DOT/FAA/CT-87/33, ROSA P. https://rosap.ntl.bts.gov/view/dot/92945.
Export RIS Citation Information. TY - Tech Report A2 - United States. Department of Transportation. Federal Aviation Administration. Technical Center A2 - Data Transformation Corporation A3 - United States. Department of Transportation. Federal Aviation Administration AB - This document is the concluding report in a project whose objective was to convert in a reasonably short period of time, machine dependent software to a higher order language capable of running on any general purpose computer. A subset of the New York (N. Y.) TRACON (version A5.04) software was chosen for conversion, specifically, the tracking algorithms. The effort concluded with a demonstration of the converted software running on an IBM 3080 processor and was presented on a Sony display. The present UNIVAC ULTRA programs were converted to ADA/POL and the system implemented in PASCAL. Over 53,000 lines of ULTRA source code were converted to 47,000 lines of ADA/POL (including commentary) and then to 32,000 lines of PASCAL (without commentary). The project was concluded in 9 months with the successful demonstration. AN - dot:92945 DA - 1987-08-01 ET - Final Report KW - Air traffic control KW - Information processing KW - Radar air traffic control LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1987 SN - DOT/FAA/CT-87/33 TI - New York TRACON Demonstration of Program Recoding Software Translation and Verification Methodology Document M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92945 ER -
Study of Benefits of Passenger Protective Breathing Equipment From Analysis of Past Accidents

Speitel, L. C. ;

Hill, R. G.

1988-03-01 | PDF

A computer model was developed and utilized for calculating the benefits of passenger protective breathing devices and other fire safety improvements based on an analysis of accidents involving fire occurring from 1966 to 1986. The results of exercising this model on 20 past accidents indicate that the lives saved is very sensitive to assumption. I ...

08/17/2026

Title : Study of Benefits of Passenger Protective Breathing Equipment From Analysis of Past Accidents Creator(s) : Speitel, L. C.;Hill, R. G.; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-03-01 Report Number : DOT/FAA/CT-88/03 URL : https://rosap.ntl.bts.gov/view/dot/92944
Speitel, L. C., & Hill, R. G. (1988). Study of Benefits of Passenger Protective Breathing Equipment From Analysis of Past Accidents (Report No. DOT/FAA/CT-88/03). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92944

Speitel, L. C. and R. G. Hill. Study of Benefits of Passenger Protective Breathing Equipment From Analysis of Past Accidents. Report no. DOT/FAA/CT-88/03. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988. https://rosap.ntl.bts.gov/view/dot/92944.

Speitel, L. C., and R. G. Hill Study of Benefits of Passenger Protective Breathing Equipment From Analysis of Past Accidents. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1988, Report no. DOT/FAA/CT-88/03, ROSA P. https://rosap.ntl.bts.gov/view/dot/92944.
Export RIS Citation Information. TY - Tech Report AU - Speitel, L. C. AU - Hill, R. G. A2 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - A computer model was developed and utilized for calculating the benefits of passenger protective breathing devices and other fire safety improvements based on an analysis of accidents involving fire occurring from 1966 to 1986. The results of exercising this model on 20 past accidents indicate that the lives saved is very sensitive to assumption. It was determined that seat cushion fire blocking (FB) would have saved almost half the lives. Floor proximity lighting (FPL) is much less effective than FB, saving 3 to 4 percent of fire deaths. Protective breathing equipment (PBE), assuming no donning delay and 100 percent usage by passengers is more effective than FPL. However, a 15 second donning delay of PBE may have resulted in a net disbenefit. AN - dot:92944 DA - 1988-03-01 ET - Final Report KW - Aircraft KW - Breathing apparatus KW - Chemical reduction KW - Estimates KW - Fatalities KW - Fires LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988 SN - DOT/FAA/CT-88/03 TI - Study of Benefits of Passenger Protective Breathing Equipment From Analysis of Past Accidents M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92944 ER -
Modification and Statistical Analysis of the Colorado Rockfall Hazard Rating System

Russell, Christopher P. ;

Santi, Paul

2008-09-01 | PDF

The purpose of this study was to improve the current Rockfall Hazard Rating System (RHRS) in use by the Colorado Department of Transportation (CDOT) by adding several climatic and geological factors recognized in technical literature that contribute to rockfall. Once the system was improved, 200 slopes were rated within the Colorado Front Range: 10 ...

08/17/2026

Title : Modification and Statistical Analysis of the Colorado Rockfall Hazard Rating System Creator(s) : Russell, Christopher P.;Santi, Paul;Higgins, Jerry D.; Corporate Creator(s) : Colorado School of Mines Corporate Contributor(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch;United States. Department of Transportation. Federal Highway Administration; Published Date : 2008-09-01 Report Number : CDOT-2008-7 URL : https://rosap.ntl.bts.gov/view/dot/92943
Russell, C. P., Santi, P., & Higgins, J. D. (2008). Modification and Statistical Analysis of the Colorado Rockfall Hazard Rating System (Report No. CDOT-2008-7). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92943

Russell, Christopher P., Paul Santi, and Jerry D. Higgins. Modification and Statistical Analysis of the Colorado Rockfall Hazard Rating System. Report no. CDOT-2008-7. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92943.

Russell, Christopher P., et al. Modification and Statistical Analysis of the Colorado Rockfall Hazard Rating System. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-7, ROSA P. https://rosap.ntl.bts.gov/view/dot/92943.
Export RIS Citation Information. TY - Tech Report AU - Russell, Christopher P. AU - Santi, Paul AU - Higgins, Jerry D. A2 - Colorado School of Mines A3 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - The purpose of this study was to improve the current Rockfall Hazard Rating System (RHRS) in use by the Colorado Department of Transportation (CDOT) by adding several climatic and geological factors recognized in technical literature that contribute to rockfall. Once the system was improved, 200 slopes were rated within the Colorado Front Range: 106 crystalline cut slopes (a crystalline rock cut); 51 crystalline total slopes (both a cut and the natural slope above); 35 block-in-matrix slopes; and 8 sedimentary slopes. The resulting data for each slope type was analyzed using univariate least squares regression, multivariate ordinal logistic regression, and multivariate stepwise regression to identify and rank the dominating factors that contribute to rockfall. The rank of the new scores for the 200 slopes was compared to the rank of the original scores to ensure that the modifications allow for a better prediction of rockfall potential. AN - dot:92943 DA - 2008-09-01 ET - Final Report KW - Embankments KW - Geology KW - Hazard analysis KW - Logistic regression analysis KW - Regression analysis KW - Rock slopes KW - Rockfalls KW - Sedimentary rocks KW - Weather conditions KW - Statistical analysis KW - Ratings KW - Literature reviews KW - Data analysis KW - Rockfall Hazard Rating System (RHRS) KW - cut slopes KW - total slopes KW - crystalline slopes KW - sedimentary slopes KW - block-in-matrix slopes KW - hazard rank KW - univariate least squares regression KW - multivariate ordinal logistic regression KW - multivariate stepwise regression LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-7 TI - Modification and Statistical Analysis of the Colorado Rockfall Hazard Rating System M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92943 ER -
Multi-Criteria Wetlands Mapping Using an Integrated Pixel-Based and Object-Based Classification Approach

Hsu, Chengmin ;

Johnson, Lynn

2008-09-01 | PDF

The Colorado Department of Transportation (CDOT) has the challenging task of protecting the environment while developing and maintaining the best transportation systems and services possible for the citizens of Colorado. Among these tasks, a wetland inventory database is a key component required to meet the environmental protection mandate. The sub ...

08/17/2026

Title : Multi-Criteria Wetlands Mapping Using an Integrated Pixel-Based and Object-Based Classification Approach Creator(s) : Hsu, Chengmin;Johnson, Lynn; Corporate Creator(s) : University of Colorado at Denver. Department of Civil Engineering Corporate Contributor(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch;United States. Department of Transportation. Federal Highway Administration; Published Date : 2008-09-01 Report Number : CDOT-2008-8 URL : https://rosap.ntl.bts.gov/view/dot/92942
Hsu, C., & Johnson, L. (2008). Multi-Criteria Wetlands Mapping Using an Integrated Pixel-Based and Object-Based Classification Approach (Report No. CDOT-2008-8). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92942

Hsu, Chengmin and Lynn Johnson. Multi-Criteria Wetlands Mapping Using an Integrated Pixel-Based and Object-Based Classification Approach. Report no. CDOT-2008-8. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92942.

Hsu, Chengmin, and Lynn Johnson Multi-Criteria Wetlands Mapping Using an Integrated Pixel-Based and Object-Based Classification Approach. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-8, ROSA P. https://rosap.ntl.bts.gov/view/dot/92942.
Export RIS Citation Information. TY - Tech Report AU - Hsu, Chengmin AU - Johnson, Lynn A2 - University of Colorado at Denver. Department of Civil Engineering A3 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - The Colorado Department of Transportation (CDOT) has the challenging task of protecting the environment while developing and maintaining the best transportation systems and services possible for the citizens of Colorado. Among these tasks, a wetland inventory database is a key component required to meet the environmental protection mandate. The subject research project is directed to developing a semi-automated method to identify and classify inland wetlands in the northern Front Range area of Colorado. A goal of the project is to produce a database that accurately records wetland locations based on the classification system that is commonly used by many organizationsand institutions. The methodology is based on satellite imagery, high resolution aerial photos, and digital elevation model data in conjunction with field global positioning system data collections. Satellite imagery being used includes moderate resolution LANDSAT 7 ETM+, Terra ASTER, and EO-1 Hyperion/ALI. The aerial photography is from the National Agriculture Imagery Program and is mainly used for validation and sample collection purposes. The EO-1 imagery has high spectral resolution and is used to develop a wetlands spectrum signature library which is then used to observe the correlations between EO-1 and LANDSAT 7 and ASTER image bands. The image processing approach being applied uses both pixel-based and object-based classification techniques; the object-based technique accounts for the pattern of neighboring pixels and wetland boundary shapes. The variables generated for object-based classification algorithm are extracted from multi-spectral imagery and include image texture, wetland shapes, greenness, wetness, brightness, normalized difference vegetation index, principal components, stream networks, biological soil crust index, and land thermal fluctuation. In the final stage, these variables are incorporated into a hierarchical rule creation for facilitating the wetland classification operation. To complete the tasks, the software used include ArcGIS®, ENVI®, DEFINIENS® Professional. Results of the research indicate a high correspondence with wetlands mapped by field biologists and identification of additional wetlands not previously recognized. AN - dot:92942 DA - 2008-09-01 ET - Final Report KW - Remote sensing KW - Geographic information systems KW - Global Positioning System KW - Aerial photography KW - Databases KW - Hydrology KW - Image processing KW - Inventory KW - Landsat satellites KW - Wetlands KW - Mapping KW - Environmental protection KW - USACE Wetlands Delineation Manual KW - wetland inventory databases KW - hydrological analysis LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-8 TI - Multi-Criteria Wetlands Mapping Using an Integrated Pixel-Based and Object-Based Classification Approach M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92942 ER -

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