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Showing 181 - 200 of 427 results

Railroads in Reorganization as of February, 1975: Included in Rail Reorganization Act of 1973

United States Railway Association

1975-02-01 | PDF

This one-sheet color railroad map was prepared by the United States Railway Association in Washington, D.C., in February 1975. It depicts the routes of eight railroad systems included in, or being considered for inclusion in, the federal rail-reorganization planning process: the Ann Arbor Railroad, Pennsylvania-Reading Seashore Lines, Central Railr ...

08/17/2026

Title : Railroads in Reorganization as of February, 1975: Included in Rail Reorganization Act of 1973 Corporate Creator(s) : United States Railway Association Published Date : 1975-02-01 URL : https://rosap.ntl.bts.gov/view/dot/92967
United States Railway Association (1975). Railroads in Reorganization as of February, 1975: Included in Rail Reorganization Act of 1973.

United States Railway Association "Railroads in Reorganization as of February, 1975: Included in Rail Reorganization Act of 1973" (1975)

United States Railway Association "Railroads in Reorganization as of February, 1975: Included in Rail Reorganization Act of 1973" , 1975
Export RIS Citation Information. TY - Map A2 - United States Railway Association AB - This one-sheet color railroad map was prepared by the United States Railway Association in Washington, D.C., in February 1975. It depicts the routes of eight railroad systems included in, or being considered for inclusion in, the federal rail-reorganization planning process: the Ann Arbor Railroad, Pennsylvania-Reading Seashore Lines, Central Railroad of New Jersey, Erie Lackawanna Railway, Lehigh and Hudson River Railway, Lehigh Valley Railroad, Penn Central Transportation Company, and Reading Company. Trackage rights are identified separately. The map covers the northeastern and midwestern United States, extending from St. Louis and Chicago through the Great Lakes region, Pennsylvania, New York, New Jersey, New England, and the Middle Atlantic states, with portions of connecting Canadian territory also shown. Major cities, junctions, and connecting rail lines provide geographic and operational context. AB - The map documents the inherited railroad network that the United States Railway Association was evaluating under the Regional Rail Reorganization Act of 1973. It shows the geographic extent, overlap, and complexity of the railroad systems being considered before USRA's proposed restructuring and property-allocation decisions were applied. AB - The map also captures the transitional status of the Erie Lackawanna Railway. Erie Lackawanna routes are depicted and the railroad is identified in the legend, but a note states that its reorganization status remained undefined as of February 1975. Erie Lackawanna had not initially entered the USRA planning process on the same basis as the other railroads because its reorganization court had concluded that it could potentially be reorganized independently under Section 77 of the Bankruptcy Act. After its trustees subsequently sought inclusion in the federal reorganization process, USRA incorporated Erie Lackawanna into its later planning work and supplemental analyses. The map is likely associated with Preliminary System Plan, Volume I, issued by USRA on February 26, 1975, and preserved in ROSAP as record 91982. Its date, issuing agency, geographic coverage, and planning purpose correspond closely to the Preliminary System Plan process. Unlike the companion recommended-industry-structure map, however, this map has not been located by title in the text of Volume I. It should therefore be described as likely associated with, or related to, the Preliminary System Plan rather than positively identified as an accompanying map. AB - The map is useful for research concerning the Regional Rail Reorganization Act of 1973, USRA planning, railroad bankruptcy and restructuring, route rationalization, the changing status of the Erie Lackawanna Railway, the formation of Conrail, and northeastern and midwestern railroad geography during the 1970s. AB - United States Railway Association. (1975, February). Railroads in reorganization as of February 1975: Included in Rail Reorganization Act of 1973 [Map]. AN - dot:92967 KW - Abandonment KW - Bankruptcy KW - Bibliographies KW - Economics KW - Financing KW - Marketing KW - Regional planning KW - Maps KW - Railroads KW - Regional railroads LA - English PB - United States Railway Association PY - 1975-02-01 TI - Railroads in Reorganization as of February, 1975: Included in Rail Reorganization Act of 1973 M3 - Map N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92967 ER - DB - ROSA P
The Effect of Aircraft Size on Cabin Floor Dynamic Pulses

Wittlin, G. ;

Neri, L.

1990-03-01 | PDF

The FAA Technical Center's investigation into size scaling of cabin floor crash pulses examined both narrow-body and wide-body aircraft, using measured crash test data and the KRASH analytical model validated by the Controlled Impact Demonstration (CID).

08/17/2026

Title : The Effect of Aircraft Size on Cabin Floor Dynamic Pulses Creator(s) : Wittlin, G.;Neri, L.; Corporate Creator(s) : Lockheed Aeronautical Systems Company Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1990-03-01 Report Number : DOT/FAA/CT-88/15 URL : https://rosap.ntl.bts.gov/view/dot/92966
Wittlin, G. and Neri, L. (1990). The Effect of Aircraft Size on Cabin Floor Dynamic Pulses.

Wittlin, G. and Neri, L. "The Effect of Aircraft Size on Cabin Floor Dynamic Pulses" (1990)

Wittlin, G. and Neri, L. "The Effect of Aircraft Size on Cabin Floor Dynamic Pulses" , 1990
Export RIS Citation Information. TY - Tech Report AU - Wittlin, G. AU - Neri, L. A2 - Lockheed Aeronautical Systems Company A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - The FAA Technical Center's investigation into size scaling of cabin floor crash pulses examined both narrow-body and wide-body aircraft, using measured crash test data and the KRASH analytical model validated by the Controlled Impact Demonstration (CID). AN - dot:92966 ET - Final Report KW - Aircraft cabins KW - Airframes KW - Airplanes KW - Crashworthiness LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1990-03-01 SN - DOT/FAA/CT-88/15 TI - The Effect of Aircraft Size on Cabin Floor Dynamic Pulses M3 - Tech Report N1 - United States N1 - DTFA03-84-C-00004 UR - https://rosap.ntl.bts.gov/view/dot/92966 ER - DB - ROSA P
The Performance of Alternate Fuels in General Aviation Aircraft

Ferrara, Augusto ;

Wares, Richard N.

1988-07-01 | PDF

This report describes the results of a study which measured the effects of pressure altitude on fuel weathering. In this study, samples of unleaded automobile gasoline were exposed to varying pressure altitudes, and the effects of this exposure on aircraft performance and volatility were measured. The composition of the fuel, aircraft configuration ...

08/17/2026

Title : The Performance of Alternate Fuels in General Aviation Aircraft Creator(s) : Ferrara, Augusto;Wares, Richard N.; Corporate Creator(s) : National Institute for Petroleum and Energy Research (NIPER}) Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-07-01 Report Number : DOT/FAA/CT-88/13 URL : https://rosap.ntl.bts.gov/view/dot/92965
Ferrara, Augusto and Wares, Richard N. (1988). The Performance of Alternate Fuels in General Aviation Aircraft.

Ferrara, Augusto and Wares, Richard N. "The Performance of Alternate Fuels in General Aviation Aircraft" (1988)

Ferrara, Augusto and Wares, Richard N. "The Performance of Alternate Fuels in General Aviation Aircraft" , 1988
Export RIS Citation Information. TY - Tech Report AU - Ferrara, Augusto AU - Wares, Richard N. A2 - National Institute for Petroleum and Energy Research (NIPER}) A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report describes the results of a study which measured the effects of pressure altitude on fuel weathering. In this study, samples of unleaded automobile gasoline were exposed to varying pressure altitudes, and the effects of this exposure on aircraft performance and volatility were measured. The composition of the fuel, aircraft configuration, and the initial temperature of the fuel when transferred to the tank were varied to determine the extent these variables affected the aircraft performance. AN - dot:92965 ET - Final Report KW - Airplanes KW - Fuel systems KW - Fuels KW - Vapor lock KW - Alternate fuels LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-07-01 SN - DOT/FAA/CT-88/13 TI - The Performance of Alternate Fuels in General Aviation Aircraft M3 - Tech Report N1 - United States N1 - DTFA03-87-A-0005 UR - https://rosap.ntl.bts.gov/view/dot/92965 ER - DB - ROSA P
Sensitivity of Selected Colorado Soils to Form Ettringite/Thaumasite When Treated With Calcium-Based Stabilizers and When Soluble Sulfates Are Available

Little, Dallas N. ;

Nair, Syam

2007-11-01 | PDF

The sensitivity of five Colorado soils, which were selected to represent the variety of soils likely to be treated with calcium-based chemical stabilizers such as hydrated lime or Portland cement, to the formation of potentially expansive minerals are evaluated using thermodynamic principles based on Gibb's free energy and direct measurements. Phas ...

08/17/2026

Title : Sensitivity of Selected Colorado Soils to Form Ettringite/Thaumasite When Treated With Calcium-Based Stabilizers and When Soluble Sulfates Are Available Creator(s) : Little, Dallas N.;Nair, Syam; Corporate Creator(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2007-11-01 Report Number : CDOT-2007-14 URL : https://rosap.ntl.bts.gov/view/dot/92964
Little, Dallas N. and Nair, Syam (2007). Sensitivity of Selected Colorado Soils to Form Ettringite/Thaumasite When Treated With Calcium-Based Stabilizers and When Soluble Sulfates Are Available.

Little, Dallas N. and Nair, Syam "Sensitivity of Selected Colorado Soils to Form Ettringite/Thaumasite When Treated With Calcium-Based Stabilizers and When Soluble Sulfates Are Available" (2007)

Little, Dallas N. and Nair, Syam "Sensitivity of Selected Colorado Soils to Form Ettringite/Thaumasite When Treated With Calcium-Based Stabilizers and When Soluble Sulfates Are Available" , 2007
Export RIS Citation Information. TY - Tech Report AU - Little, Dallas N. AU - Nair, Syam A2 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - The sensitivity of five Colorado soils, which were selected to represent the variety of soils likely to be treated with calcium-based chemical stabilizers such as hydrated lime or Portland cement, to the formation of potentially expansive minerals are evaluated using thermodynamic principles based on Gibb's free energy and direct measurements. Phase diagrams are used to predict the threshold levels of soluble sulfates that favor the formation of the expansive mineral ettringite, which is most widely blamed for deleterious expansion in sulfate bearing soils treated with calcium-based stabilizers. The results of the thermodynamic, phase diagram evaluation are checked against direct measurement of ettringite using differential scanning calorimetry (DSC), and the results agree well. The conclusions derived from this research are that, as expected, mineralogical differences among the soils affect the threshold level of soluble sulfates that trigger the development of ettringite and that the presence of soluble silica and the form of alumina present have a dominant effect. The research validates previous research that a safe lower limit of soluble sulfates is approximately 3,000 ppm as long as additional soluble sulfates do not migrate into the soil. A methodology is presented for using the DSC to directly assess the threshold level of sulfates for a particular soil. However, refinement of the method is a key goal of on-going research. AN - dot:92964 ET - Final Report KW - Calcium sulfates KW - Alumina KW - Calcium hydroxide KW - Calorimeters KW - Ettringite KW - Mineralogy KW - Portland cement KW - Silica KW - Soil stabilization KW - Sulfates KW - Swelling soils KW - Thermodynamics KW - sulfate-induced heave KW - soil mineralogy KW - differential scanning calorimeter KW - Gibb's free energy LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2007-11-01 SN - CDOT-2007-14 TI - Sensitivity of Selected Colorado Soils to Form Ettringite/Thaumasite When Treated With Calcium-Based Stabilizers and When Soluble Sulfates Are Available M3 - Tech Report N1 - United States N1 - 80.25 UR - https://rosap.ntl.bts.gov/view/dot/92964 ER - DB - ROSA P
Greening Government Research and Implementation Project - Phase 1

Ferraro, Deborah ;

Powers, Carrie

2007-12-01 | PDF

The Greening Government Research Project is Phase 1 of a two-phased research approach to identify how CDOT can achieve the goals and objectives mandated in Governor Ritter's recently signed executive orders on greening state government. The term "greening" means reducing negative environmental impacts through conservation of energy, water, waste, a ...

08/17/2026

Title : Greening Government Research and Implementation Project - Phase 1 Creator(s) : Ferraro, Deborah;Powers, Carrie; Corporate Creator(s) : Felsburg Holt & Ullevig Corporate Contributor(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch;United States. Department of Transportation. Federal Highway Administration; Published Date : 2007-12-01 Report Number : CDOT-2007-8 URL : https://rosap.ntl.bts.gov/view/dot/92963
Ferraro, Deborah and Powers, Carrie (2007). Greening Government Research and Implementation Project - Phase 1.

Ferraro, Deborah and Powers, Carrie "Greening Government Research and Implementation Project - Phase 1" (2007)

Ferraro, Deborah and Powers, Carrie "Greening Government Research and Implementation Project - Phase 1" , 2007
Export RIS Citation Information. TY - Tech Report AU - Ferraro, Deborah AU - Powers, Carrie A2 - Felsburg Holt & Ullevig A3 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - The Greening Government Research Project is Phase 1 of a two-phased research approach to identify how CDOT can achieve the goals and objectives mandated in Governor Ritter's recently signed executive orders on greening state government. The term "greening" means reducing negative environmental impacts through conservation of energy, water, waste, and other natural resources using a variety of measures. This report recommends preliminary actions CDOT can implement to begin greening the government in support of recent requirements and previously enacted state agency requirements. This report also identifies additional research to be performed as Phase 2 of the Greening Government Research and Implementation Project. AN - dot:92963 ET - Final Report KW - Energy conservation KW - Environmental impacts KW - Implementation KW - Natural resources KW - Policy KW - Waste management KW - Water conservation KW - Energy efficiency KW - Recycling KW - Leadership in Energy and Environmental Design (LEED) KW - green actions KW - waste reduction KW - environmental preferable purchasing KW - Colorado executive orders KW - U.S. Green Building Council (USGBC) LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2007-12-01 SN - CDOT-2007-8 TI - Greening Government Research and Implementation Project - Phase 1 M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92963 ER - DB - ROSA P
Digital Systems Validation Handbook - Volume II

Computer Resource Management, Inc

1989-02-01 | PDF

Volume II covers detailed technical topics such as latent faults; data buses; integrated assurance assessment; analytical sensor redundancy; and protection against lightning, electromagnetic interference, and high energy radio frequency fields. These topics are covered in detail to familiarize the certification engineer with the issues involved in ...

08/17/2026

Supporting Files

Title : Digital Systems Validation Handbook - Volume II Corporate Creator(s) : Computer Resource Management, Inc Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-02-01 Report Number : DOT/FAA/CT-88/10 URL : https://rosap.ntl.bts.gov/view/dot/92962
Computer Resource Management, Inc (1989). Digital Systems Validation Handbook - Volume II.

Computer Resource Management, Inc "Digital Systems Validation Handbook - Volume II" (1989)

Computer Resource Management, Inc "Digital Systems Validation Handbook - Volume II" , 1989
Export RIS Citation Information. TY - Manual A2 - Computer Resource Management, Inc A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - Volume II covers detailed technical topics such as latent faults; data buses; integrated assurance assessment; analytical sensor redundancy; and protection against lightning, electromagnetic interference, and high energy radio frequency fields. These topics are covered in detail to familiarize the certification engineer with the issues involved in implementing the new technologies. AN - dot:92962 ET - Version 2 KW - Avionics KW - Digital displays KW - Electromagnetic interference KW - Handbooks KW - Lighting KW - Manuals KW - Protection LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-02-01 SN - DOT/FAA/CT-88/10 TI - Digital Systems Validation Handbook - Volume II M3 - Manual N1 - United States N1 - DTFA03-86-C-00042 UR - https://rosap.ntl.bts.gov/view/dot/92962 ER - DB - ROSA P
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, Erzhuo et al. (2026). Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data.

Che, Erzhuo et al. "Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data" (2026)

Che, Erzhuo et al. "Prototyping Automated Framework for Asset Extraction and Characterization From Mobile Lidar Data" , 2026
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 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 - 2026-08-01 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 UR - https://rosap.ntl.bts.gov/view/dot/92961 ER - DB - ROSA P
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, William (Skip) (2008). Evaluation of Truck Arrester Beds in Colorado.

Outcalt, William (Skip) "Evaluation of Truck Arrester Beds in Colorado" (2008)

Outcalt, William (Skip) "Evaluation of Truck Arrester Beds in Colorado" , 2008
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 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 - 2008-01-01 SN - CDOT-2008-1 TI - Evaluation of Truck Arrester Beds in Colorado M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92960 ER - DB - ROSA P
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, Kevin R. et al. (2008). Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions.

Crooks, Kevin R. et al. "Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions" (2008)

Crooks, Kevin R. et al. "Roads and Connectivity in Colorado: Animal-Vehicle Collisions, Wildlife Mitigation Structures, and Lynx-Roadway Interactions" , 2008
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 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 - 2008-03-01 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 UR - https://rosap.ntl.bts.gov/view/dot/92959 ER - DB - ROSA P
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, Dike and Mani, Akshay (2008). Freight Data Synthesis.

Ahanotu, Dike and Mani, Akshay "Freight Data Synthesis" (2008)

Ahanotu, Dike and Mani, Akshay "Freight Data Synthesis" , 2008
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 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 - 2008-04-01 SN - CDOT-2008-3 TI - Freight Data Synthesis M3 - Tech Report N1 - United States N1 - 66.20 UR - https://rosap.ntl.bts.gov/view/dot/92958 ER - DB - ROSA P
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, Neal (2008). Permeability Research With the ROMUS Air Permeameter.

Retzer, Neal "Permeability Research With the ROMUS Air Permeameter" (2008)

Retzer, Neal "Permeability Research With the ROMUS Air Permeameter" , 2008
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 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 - 2008-06-01 SN - CDOT-2008-5 TI - Permeability Research With the ROMUS Air Permeameter M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92957 ER - DB - ROSA P
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, Brian et al. (2008). Areawide Coordinated Cumulative Effects Analysis - Phase 1.

Muller, Brian et al. "Areawide Coordinated Cumulative Effects Analysis - Phase 1" (2008)

Muller, Brian et al. "Areawide Coordinated Cumulative Effects Analysis - Phase 1" , 2008
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 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 - 2008-07-01 SN - CDOT-2008-6 TI - Areawide Coordinated Cumulative Effects Analysis - Phase 1 M3 - Tech Report N1 - United States N1 - 34.70 UR - https://rosap.ntl.bts.gov/view/dot/92956 ER - DB - ROSA P
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, Matthew et al. (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.

Nussbaumer, Matthew and Hidalgo, Keith and Ansell, Eden "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" (2026)

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" , 2026
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 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 - 2026-06-01 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 UR - https://rosap.ntl.bts.gov/view/dot/92955 ER - DB - ROSA P
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. et al. (1991). Aircraft Icing Handbook, Volume 3 of 3.

Heinrich, A. et al. "Aircraft Icing Handbook, Volume 3 of 3" (1991)

Heinrich, A. et al. "Aircraft Icing Handbook, Volume 3 of 3" , 1991
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 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 - 1991-03-01 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 UR - https://rosap.ntl.bts.gov/view/dot/92954 ER - DB - ROSA P
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. et al. (1991). Aircraft Icing Handbook, Volume 2 of 3.

Heinrich, A. et al. "Aircraft Icing Handbook, Volume 2 of 3" (1991)

Heinrich, A. et al. "Aircraft Icing Handbook, Volume 2 of 3" , 1991
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 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 - 1991-03-01 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 UR - https://rosap.ntl.bts.gov/view/dot/92953 ER - DB - ROSA P
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. et al. (1991). Aircraft Icing Handbook, Volume 1 of 3.

Heinrich, A. et al. "Aircraft Icing Handbook, Volume 1 of 3" (1991)

Heinrich, A. et al. "Aircraft Icing Handbook, Volume 1 of 3" , 1991
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 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 - 1991-03-01 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 UR - https://rosap.ntl.bts.gov/view/dot/92952 ER - DB - ROSA P
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. et al. (1988). Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport.

Barab, J. D. et al. "Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport" (1988)

Barab, J. D. et al. "Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport" , 1988
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 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 - 1988-08-01 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 UR - https://rosap.ntl.bts.gov/view/dot/92951 ER - DB - ROSA P
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, Augusto (1988). Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines.

Ferrara, Augusto "Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines" (1988)

Ferrara, Augusto "Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines" , 1988
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 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 - 1988-06-01 SN - DOT/FAA/CT88/05 TI - Alternate Fuels for General Aviation Aircraft with Spark Ignition Engines M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92950 ER - DB - ROSA P
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, Christine (1988). Report on Surgical Implants.

Poelma, Christine "Report on Surgical Implants" (1988)

Poelma, Christine "Report on Surgical Implants" , 1988
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 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 - 1988-01-01 TI - Report on Surgical Implants M3 - Tech Report N1 - United States N1 - ACT-588 UR - https://rosap.ntl.bts.gov/view/dot/92949 ER - DB - ROSA P
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, Patricia and Dailey, James H. (1988). Aircraft Electrical Wet-Wire Arc Tracking.

Cahill, Patricia and Dailey, James H. "Aircraft Electrical Wet-Wire Arc Tracking" (1988)

Cahill, Patricia and Dailey, James H. "Aircraft Electrical Wet-Wire Arc Tracking" , 1988
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 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 - 1988-08-01 SN - DOT/FAA/CT-88/4 TI - Aircraft Electrical Wet-Wire Arc Tracking M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92948 ER - DB - ROSA P

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