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Showing 221 - 240 of 427 results

Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines [Research Brief]

Abadi, Masoud Ghodrat ;

Moghadam, Rohollah (Roham)

2026-07-01 | PDF

This study developed and implemented the Workforce for Autonomous Vehicle Engineering (WAVE) program at California State University, Sacramento. The program was designed to address workforce gaps in autonomous transportation by combining transportation engineering and electrical engineering into a single interdisciplinary learning experience. WAVE ...

08/10/2026

Title : Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines [Research Brief] Creator(s) : Abadi, Masoud Ghodrat;Moghadam, Rohollah (Roham); Corporate Creator(s) : San Jose State University. College of Business. Mineta Transportation Institute;California State University Sacramento; Corporate Contributor(s) : State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration;United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-07-01 Report Number : 2550 URL : https://rosap.ntl.bts.gov/view/dot/92927
Abadi, Masoud Ghodrat and Moghadam, Rohollah (Roham) (2026). Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines [Research Brief].

Abadi, Masoud Ghodrat and Moghadam, Rohollah (Roham) "Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines [Research Brief]" (2026)

Abadi, Masoud Ghodrat and Moghadam, Rohollah (Roham) "Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines [Research Brief]" , 2026
Export RIS Citation Information. TY - Brief AU - Abadi, Masoud Ghodrat AU - Moghadam, Rohollah (Roham) A2 - San Jose State University. College of Business. Mineta Transportation Institute A2 - California State University Sacramento A3 - State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - This study developed and implemented the Workforce for Autonomous Vehicle Engineering (WAVE) program at California State University, Sacramento. The program was designed to address workforce gaps in autonomous transportation by combining transportation engineering and electrical engineering into a single interdisciplinary learning experience. WAVE focused on preparing students for AV-related careers through a blend of theoretical instruction and hands-on laboratory training. AN - dot:92927 ET - Research Brief KW - Autonomous vehicles KW - Workforce development KW - Education and training KW - Interdisciplinary studies KW - Intelligent transportation systems KW - Bridges KW - Electrical engineering KW - Civil engineering KW - Surveys KW - Laboratory tests KW - Evaluation LA - English PB - San Jose State University. College of Business. Mineta Transportation Institute PY - 2026-07-01 SN - 2550 TI - Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines [Research Brief] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92927 ER - DB - ROSA P
An Empirical Look at Tolerances in Setting Icing Test Conditions with Particular Application to Icing Similitude

Bartlett, C. Scott

1988-08-01 | PDF

An investigation was conducted of the requirements for setting icing test conditions for aircraft engine certification tests. Experimental data were gathered and analyzed to determine how much each of the ice scaling parameters could be allowed to deviate from specified conditions without affecting the similarity of the ice accretions. Also studied ...

08/10/2026

Title : An Empirical Look at Tolerances in Setting Icing Test Conditions with Particular Application to Icing Similitude Creator(s) : Bartlett, C. Scott Corporate Creator(s) : Arnold Engineering Development Center, AFB TN Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-08-01 Report Number : AEDC-TR-87-23, DOT/FAA/CT-87/31 URL : https://rosap.ntl.bts.gov/view/dot/92926
Bartlett, C. Scott (1988). An Empirical Look at Tolerances in Setting Icing Test Conditions with Particular Application to Icing Similitude.

Bartlett, C. Scott "An Empirical Look at Tolerances in Setting Icing Test Conditions with Particular Application to Icing Similitude" (1988)

Bartlett, C. Scott "An Empirical Look at Tolerances in Setting Icing Test Conditions with Particular Application to Icing Similitude" , 1988
Export RIS Citation Information. TY - Tech Report AU - Bartlett, C. Scott A2 - Arnold Engineering Development Center, AFB TN A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - An investigation was conducted of the requirements for setting icing test conditions for aircraft engine certification tests. Experimental data were gathered and analyzed to determine how much each of the ice scaling parameters could be allowed to deviate from specified conditions without affecting the similarity of the ice accretions. Also studied were how changes in the ice scaling parameters and changes in the icing test conditions themselves affected the resulting ice shapes. The results indicate that (1) icing similitude criteria must be established in advance of the test; (2) changes in the scaling parameters do not necessarily indicate a change in the ice shape; (3)experimental data are useful in determining allowable changes in the icing test conditions; (4) determination of allowable tolerances for icing test parameters will depend on which icing regime one is operating in; and (5) scaling laws used in this report cannot solely be used to determine tolerances in setting icing test conditions. AN - dot:92926 ET - Final Report KW - Airplanes KW - Certification KW - Ice prevention KW - Motors LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-08-01 SN - AEDC-TR-87-23, DOT/FAA/CT-87/31 TI - An Empirical Look at Tolerances in Setting Icing Test Conditions with Particular Application to Icing Similitude M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92926 ER - DB - ROSA P
Three-Dimensional Trajectory Analyses of Two Drop Sizing Instruments: PMS OAP and PMS FSSP

Norment, Hillyer G.

1988-02-01 | PDF

Flow induced distortions of water drop fluxes and speeds seen by the instruments were predicted by use of three dimensional flow and trajectory calculation methods. Sensitivities were determined for the instruments, in isolation and mounted under the wing of an airplane, to: water drop diameter (2 to 1000 microns), angle of attack and free stream a ...

08/10/2026

Title : Three-Dimensional Trajectory Analyses of Two Drop Sizing Instruments: PMS OAP and PMS FSSP Creator(s) : Norment, Hillyer G. Corporate Creator(s) : United States. National Aeronautics and Space Administration;Lewis Research Center; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-02-01 Report Number : DOT/FAA/CT~87130 URL : https://rosap.ntl.bts.gov/view/dot/92925
Norment, Hillyer G. (1988). Three-Dimensional Trajectory Analyses of Two Drop Sizing Instruments: PMS OAP and PMS FSSP.

Norment, Hillyer G. "Three-Dimensional Trajectory Analyses of Two Drop Sizing Instruments: PMS OAP and PMS FSSP" (1988)

Norment, Hillyer G. "Three-Dimensional Trajectory Analyses of Two Drop Sizing Instruments: PMS OAP and PMS FSSP" , 1988
Export RIS Citation Information. TY - Tech Report AU - Norment, Hillyer G. A2 - United States. National Aeronautics and Space Administration A2 - Lewis Research Center A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - Flow induced distortions of water drop fluxes and speeds seen by the instruments were predicted by use of three dimensional flow and trajectory calculation methods. Sensitivities were determined for the instruments, in isolation and mounted under the wing of an airplane, to: water drop diameter (2 to 1000 microns), angle of attack and free stream air speed. For the optical array probe in isolation and on the airplane at 0 deg angle of attack, flux distortions of practical consequence are not found. At 4 deg airplane angle of attack, partial flow stagnation under the uptilted wing causes significant decreases in both flux and speed for cloud size droplets. For the forward scattering spectrometer probe in isolation, only marginally significant sensitivities to free stream air speed are found, and no sensitivity is found to angle of attack. Both speed and flux of cloud size droplets are predicted to be undermeasured by from 12 to 24 percent depending on airplane angle of attack. For the wing-mounted instruments, effects of flow about the instruments themselves are found to be equal in importance to effects of flow about the airplane. Preferred orientation (canting) angles of distorted water drops are found to be functions of drop size, angle of attack and air speed. AN - dot:92925 ET - Contractor Report KW - Airplanes KW - Ice prevention KW - Trajectory KW - Flow measurement LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-02-01 SN - DOT/FAA/CT~87130 TI - Three-Dimensional Trajectory Analyses of Two Drop Sizing Instruments: PMS OAP and PMS FSSP M3 - Tech Report N1 - United States N1 - NAS3-24630 UR - https://rosap.ntl.bts.gov/view/dot/92925 ER - DB - ROSA P
Software Conversion Study for the Maintenance Processing Subsystem Hardware Upgrade

Computer Technology Associates, Inc.

1987-06-01 | PDF

This software conversion study was made in support of the procurement of hardware upgrades to the 38 Maintenance Processing Subsystems (HPSs) which are the host computers for the Remote Maintenance Monitoring System (RMMS). Two major functions are provided by the RMMS: (1) Monitoring and Control via the Interim Monitoring and Control Software (IMCS ...

08/10/2026

Title : Software Conversion Study for the Maintenance Processing Subsystem Hardware Upgrade Corporate Creator(s) : Computer Technology Associates, Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1987-06-01 Report Number : DOT/FAA/CT-87/29 URL : https://rosap.ntl.bts.gov/view/dot/92924
Computer Technology Associates, Inc. (1987). Software Conversion Study for the Maintenance Processing Subsystem Hardware Upgrade.

Computer Technology Associates, Inc. "Software Conversion Study for the Maintenance Processing Subsystem Hardware Upgrade" (1987)

Computer Technology Associates, Inc. "Software Conversion Study for the Maintenance Processing Subsystem Hardware Upgrade" , 1987
Export RIS Citation Information. TY - Tech Report A2 - Computer Technology Associates, Inc. A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This software conversion study was made in support of the procurement of hardware upgrades to the 38 Maintenance Processing Subsystems (HPSs) which are the host computers for the Remote Maintenance Monitoring System (RMMS). Two major functions are provided by the RMMS: (1) Monitoring and Control via the Interim Monitoring and Control Software (IMCS) and (2) Management Information via the Maintenance Management System (MMS). This study analyzed the costs/ benefits of upgrading the MPS hardware with either a fully compatible conversion or a totally non-compatible environment alternative. This study considered only the MMS software requirements. The IMCS software in place is developmental and is scheduled to be replaced in the near future. It, therefore, has not been considered in this study. The cost of each of the two alternatives, (1) fully compatible and (2) totally non-compatible, for the MMS were analyzed using the Federal Software Management Support Center's (FSMC's) Conversion Cost Model. The study was performed according to the standards outlined in the FSMC report Preparing Software Conversion Studies -Report OIT/FSCS-84/001. This report describes the development of the cost and staffing schedule requirements for both the compatible and non-compatible conversion alternatives. AN - dot:92924 ET - Final Report KW - Software KW - Maintenance management KW - Control systems KW - Automation KW - Central processing units LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1987-06-01 SN - DOT/FAA/CT-87/29 TI - Software Conversion Study for the Maintenance Processing Subsystem Hardware Upgrade M3 - Tech Report N1 - United States N1 - DTFA03-86-C-00018 UR - https://rosap.ntl.bts.gov/view/dot/92924 ER - DB - ROSA P
Longitudinal Impact Test of a Transport Airframe Section

Wade, Barry ;

Johnson, Dick

1988-07-01 | PDF

This report presents the results of longitudinally impact testing a 10-foot section of a transport airplane at peak acceleration and corresponding velocity changas of 7.4g (22.4 ft/sec) and 14.2g (36 ft/sec), respectively. The purpose of the tests was to measure the responses of the fuselage and floor structure to simulated dynamic crash loads. The ...

08/10/2026

Title : Longitudinal Impact Test of a Transport Airframe Section Creator(s) : Wade, Barry;Johnson, Dick; Corporate Creator(s) : Transportation Research Center Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-07-01 Report Number : DOT/FAA/CT-87/26 URL : https://rosap.ntl.bts.gov/view/dot/92923
Wade, Barry and Johnson, Dick (1988). Longitudinal Impact Test of a Transport Airframe Section.

Wade, Barry and Johnson, Dick "Longitudinal Impact Test of a Transport Airframe Section" (1988)

Wade, Barry and Johnson, Dick "Longitudinal Impact Test of a Transport Airframe Section" , 1988
Export RIS Citation Information. TY - Tech Report AU - Wade, Barry AU - Johnson, Dick A2 - Transportation Research Center Inc. A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report presents the results of longitudinally impact testing a 10-foot section of a transport airplane at peak acceleration and corresponding velocity changas of 7.4g (22.4 ft/sec) and 14.2g (36 ft/sec), respectively. The purpose of the tests was to measure the responses of the fuselage and floor structure to simulated dynamic crash loads. The airframe test section included a full complement of seats and dummies. Acceleration and load/deflection response measurements were obtained from the instrumented fuselage, floor and seat/dummy installation. AN - dot:92923 ET - Final Report KW - Airframes KW - Airplanes KW - Crashworthiness KW - Impacts KW - Testing LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-07-01 SN - DOT/FAA/CT-87/26 TI - Longitudinal Impact Test of a Transport Airframe Section M3 - Tech Report N1 - United States N1 - DTFA03-87-C-00013 UR - https://rosap.ntl.bts.gov/view/dot/92923 ER - DB - ROSA P
Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines

Abadi, Masoud Ghodrat ;

Moghadam, Rohollah (Roham)

2026-07-01 | PDF

Autonomous vehicles (AVs) are expected to transform transportation systems and reshape workforce needs across engineering and related fields. Although existing AV workforce development efforts often emphasize electrical engineering, computer science, and mechanical engineering, transportation engineering remains under represented despite its import ...

08/10/2026

Title : Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines Creator(s) : Abadi, Masoud Ghodrat;Moghadam, Rohollah (Roham); Corporate Creator(s) : San Jose State University. College of Business. Mineta Transportation Institute Corporate Contributor(s) : State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration;United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-07-01 Report Number : 26-17;CA-MTI-2550; URL : https://rosap.ntl.bts.gov/view/dot/92922
Abadi, Masoud Ghodrat and Moghadam, Rohollah (Roham) (2026). Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines.

Abadi, Masoud Ghodrat and Moghadam, Rohollah (Roham) "Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines" (2026)

Abadi, Masoud Ghodrat and Moghadam, Rohollah (Roham) "Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines" , 2026
Export RIS Citation Information. TY - Tech Report AU - Abadi, Masoud Ghodrat AU - Moghadam, Rohollah (Roham) A2 - San Jose State University. College of Business. Mineta Transportation Institute A3 - State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - Autonomous vehicles (AVs) are expected to transform transportation systems and reshape workforce needs across engineering and related fields. Although existing AV workforce development efforts often emphasize electrical engineering, computer science, and mechanical engineering, transportation engineering remains under represented despite its importance to infrastructure, traffic operations, safety, and mobility integration. This study addresses that gap through the development, implementation, and evaluation of an interdisciplinary certificate program, Workforce for Autonomous Vehicle Engineering (WAVE), at California State University, Sacramento. The program was designed to bridge transportation engineering and electrical engineering through a two-step curriculum model consisting of theoretical educational modules and hands-on laboratory activities. Transportation engineering modules covered traffic control devices, traffic signal timing and phasing, traffic flow theory, roadway geometric design, and supplementary topics such as human factors, level of service, and intelligent transportation systems. Electrical engineering modules addressed signals and systems, sensing technologies, sensor fusion and artificial intelligence, control systems, and communication systems. The program was delivered over seven weeks to 53 civil and electrical engineering students through a customized Canvas platform and laboratory sessions using the QCar AV platform. Program effectiveness was evaluated using a three-layer framework: pre- and post-surveys, student program evaluation, and review by a panel of industry experts. Results showed substantial improvement in both student competence and confidence, strong positive student perceptions of the curriculum and laboratory experience, and strong validation from industry experts regarding he program's interdisciplinary structure and workforce relevance. The findings demonstrate that integrating transportation engineering with electrical engineering through theory-based and experiential learning provides an effective model for preparing students for emerging careers in the AV workforce. AN - dot:92922 KW - Autonomous vehicles KW - Workforce development KW - Education and training KW - Interdisciplinary studies KW - Intelligent transportation systems KW - Bridges KW - Electrical engineering KW - Civil engineering KW - Surveys KW - Laboratory tests KW - Evaluation LA - English PB - San Jose State University. College of Business. Mineta Transportation Institute PY - 2026-07-01 SN - 26-17 TI - Preparing Today's Workforce for Tomorrow's Autonomous Transportation: Bridging Electrical and Civil Engineering Disciplines M3 - Tech Report N1 - United States N1 - SB1-SJAUX_2023-26 UR - https://rosap.ntl.bts.gov/view/dot/92922 ER - DB - ROSA P
An Experimental Method for Measuring Water Droplet Impingement Efficiency on Two- and Three-Dimensional Bodies

Papadakis, M. ;

Elangonan, R.

1989-11-01 | PDF

An experimental method was developed to determine the droplet impingement characteristics on 2-D and 3-D bodies. The experimental results provide the essential droplet impingement data required to validate water droplet trajectory codes, which are used in the analysis of aircraft icing. A body, whose water droplet impingement characteristics are re ...

08/10/2026

Title : An Experimental Method for Measuring Water Droplet Impingement Efficiency on Two- and Three-Dimensional Bodies Creator(s) : Papadakis, M.;Elangonan, R.;Freund, G. A., Jr.;Breer, M.;Zumwalt, G. W.;Whitmer, L.; Corporate Creator(s) : United States. National Aeronautics and Space Administration Corporate Contributor(s) : Lewis Research Center;United States. Department of Transportation. Federal Aviation Administration; Published Date : 1989-11-01 Report Number : DOT/FAA/CT-87/22 URL : https://rosap.ntl.bts.gov/view/dot/92921
Papadakis, M. et al. (1989). An Experimental Method for Measuring Water Droplet Impingement Efficiency on Two- and Three-Dimensional Bodies.

Papadakis, M. et al. "An Experimental Method for Measuring Water Droplet Impingement Efficiency on Two- and Three-Dimensional Bodies" (1989)

Papadakis, M. et al. "An Experimental Method for Measuring Water Droplet Impingement Efficiency on Two- and Three-Dimensional Bodies" , 1989
Export RIS Citation Information. TY - Tech Report AU - Papadakis, M. AU - Elangonan, R. AU - Freund, G. A., Jr. AU - Breer, M. AU - Zumwalt, G. W. AU - Whitmer, L. A2 - United States. National Aeronautics and Space Administration A3 - Lewis Research Center A3 - United States. Department of Transportation. Federal Aviation Administration AB - An experimental method was developed to determine the droplet impingement characteristics on 2-D and 3-D bodies. The experimental results provide the essential droplet impingement data required to validate water droplet trajectory codes, which are used in the analysis of aircraft icing. A body, whose water droplet impingement characteristics are required, is covered at strategic locations by thin strips of moisture absorbing (blotter) paper, and is exposed to an air stream containing a water dye solution spray cloud. Water droplet impingement data are extracted from the dyed blotter strips by measuring the optical reflectance of the dye deposit on the strips, using an automated reflectometer. Models tested include a 4-inch diameter cylinder, a NACA 652015 airfoil section, a MS(1)-0317 supercritical airfoil section, three simulated ice shapes, an axisymmetric inlet and a Boeing 737-300 inlet model. Detailed descriptions of the dye tracer technique, instrumentation, data reduction method and the results obtained are presented. Analytical predictions of collection efficiency characteristics for most test configurations are included for comparison. AN - dot:92921 ET - Contractor Report KW - Airplanes KW - Climate KW - Ice prevention KW - Mathematical models LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-11-01 SN - DOT/FAA/CT-87/22 TI - An Experimental Method for Measuring Water Droplet Impingement Efficiency on Two- and Three-Dimensional Bodies M3 - Tech Report N1 - United States N1 - NAG3-566 UR - https://rosap.ntl.bts.gov/view/dot/92921 ER - DB - ROSA P
Avionics System Design for High Energy Fields

McConnell, R.

1988-07-01 | PDF

Because of the significant differences in transient susceptibility, the use of digital electronics in flight critical systems, and the reduced shielding effects of composite materials, there is a definite need to define design practices which will minimize electromagnetic susceptibility, to investigate the operational environment, and to develop ap ...

08/10/2026

Title : Avionics System Design for High Energy Fields Creator(s) : McConnell, R. Corporate Creator(s) : CK Consultants, Inc Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-07-01 Report Number : DOT/FAA/CT-87/19 URL : https://rosap.ntl.bts.gov/view/dot/92920
McConnell, R. (1988). Avionics System Design for High Energy Fields.

McConnell, R. "Avionics System Design for High Energy Fields" (1988)

McConnell, R. "Avionics System Design for High Energy Fields" , 1988
Export RIS Citation Information. TY - Tech Report AU - McConnell, R. A2 - CK Consultants, Inc A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - Because of the significant differences in transient susceptibility, the use of digital electronics in flight critical systems, and the reduced shielding effects of composite materials, there is a definite need to define design practices which will minimize electromagnetic susceptibility, to investigate the operational environment, and to develop appropriate testing methods or flight critical systems. AN - dot:92920 ET - Final Report KW - Aeronautics KW - Air traffic control KW - Electromagnetic compatibility KW - Electromagnetic interference KW - Electronic equipment KW - Electronics LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-07-01 SN - DOT/FAA/CT-87/19 TI - Avionics System Design for High Energy Fields M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92920 ER - DB - ROSA P
Transverse Cracking of Asphalt Pavements

Shelquist, Robert A. ;

O'Connor, Edward J.

1982-07-01 | PDF

This report summarizes the analysis of transverse cracking in asphalt pavement by a five state study team from Iowa, Kansas, Nebraska, North Dakota, and Oklahoma. The study was initiated under the sponsorship of the Federal Highway Administration and four evaluation conferences were held during the course of the study. Each state conducted a crack ...

08/10/2026

Title : Transverse Cracking of Asphalt Pavements Creator(s) : Shelquist, Robert A.;O'Connor, Edward J.;Jordison, Donald D.;Marks, Vernon J.;Maag, Rodney G.;Wallace, Harvey E.;Baty, Montie W.;Silenieks, Janis;Wedner, Robert J.;Heedum, Roland H.;Peterson, Robert T.;Mandy, Jack;Horner, Jerry;Philliber, Wayne;Golden, David;Crenshaw, Harold;Edwards, Warren L.;Johnson, Edward D.;Bova, Raymond;Burton, James A.; Corporate Creator(s) : Iowa. Department of Transportation;Kansas. Department of Transportation;Nebraska. Department of Roads;North Dakota. State Highway Department;Oklahoma. Department of Transportation;United States. Department of Transportation. Federal Highway Administration;Asphalt Institute; Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Office of Research and Development;United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center; Published Date : 1982-07-01 Report Number : FHWA-TS-82-205 URL : https://rosap.ntl.bts.gov/view/dot/92919
Shelquist, Robert A. et al. (1982). Transverse Cracking of Asphalt Pavements.

Shelquist, Robert A. et al. "Transverse Cracking of Asphalt Pavements" (1982)

Shelquist, Robert A. et al. "Transverse Cracking of Asphalt Pavements" , 1982
Export RIS Citation Information. TY - Tech Report AU - Shelquist, Robert A. AU - O'Connor, Edward J. AU - Jordison, Donald D. AU - Marks, Vernon J. AU - Maag, Rodney G. AU - Wallace, Harvey E. AU - Baty, Montie W. AU - Silenieks, Janis AU - Wedner, Robert J. AU - Heedum, Roland H. AU - Peterson, Robert T. AU - Mandy, Jack AU - Horner, Jerry AU - Philliber, Wayne AU - Golden, David AU - Crenshaw, Harold AU - Edwards, Warren L. AU - Johnson, Edward D. AU - Bova, Raymond AU - Burton, James A. A2 - Iowa. Department of Transportation A2 - Kansas. Department of Transportation A2 - Nebraska. Department of Roads A2 - North Dakota. State Highway Department A2 - Oklahoma. Department of Transportation A2 - United States. Department of Transportation. Federal Highway Administration A2 - Asphalt Institute A3 - United States. Department of Transportation. Federal Highway Administration. Office of Research and Development A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - This report summarizes the analysis of transverse cracking in asphalt pavement by a five state study team from Iowa, Kansas, Nebraska, North Dakota, and Oklahoma. The study was initiated under the sponsorship of the Federal Highway Administration and four evaluation conferences were held during the course of the study. Each state conducted a crack inventory on their asphalt pavement. An effort was made to correlate this inventory with numerous factors that were considered to be pertinent to the cracking problem. One state did indicate that there was a correlation between transverse cracking severity and the subsurface geology. The other states were unable to identify any significant factors as being the primary contributors. The analysis of the problem was divided into, (1) mix design, (2) maintenance, and (3) 3R rehabilitation. Many potential factors to be considered were identified under each of these three study divisions. There were many conclusions as to good and bad practices. One major conclusions was that a more effective crack maintenance program with early sealing was essential. Some new practices were suggested as potentially more cost effective in design, construction and maintenance. The interchange of methods and procedures by individual states yielded benefits in that other states selected practices that would be an improvement to their program. AN - dot:92919 KW - Asphalt pavements KW - Transverse cracking KW - Pavement maintenance KW - Geological surveying KW - Mix design KW - Rehabilitation LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Research and Development PY - 1982-07-01 SN - FHWA-TS-82-205 TI - Transverse Cracking of Asphalt Pavements M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92919 ER - DB - ROSA P
Current Fire Safety Design Aspects of Commuter Aircraft

Clarke, Richard ;

Kane, Deborah

1988-03-01 | PDF

This study describes Fire Safety systems, cabin design and materials in cabin areas of ten common commuter aircraft. The aircraft were selected based upon a balance of current population and aircraft most commonly delivered. These aircraft represent 880 of 1100 commuter aircraft and probably will be the majority of the commuter fleet in the future.

08/10/2026

Title : Current Fire Safety Design Aspects of Commuter Aircraft Creator(s) : Clarke, Richard;Kane, Deborah;Stewart, Carla; Corporate Creator(s) : Events Analysis, Inc Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-03-01 Report Number : DOT/FAA/CT-87/32 URL : https://rosap.ntl.bts.gov/view/dot/92918
Clarke, Richard et al. (1988). Current Fire Safety Design Aspects of Commuter Aircraft.

Clarke, Richard and Kane, Deborah and Stewart, Carla "Current Fire Safety Design Aspects of Commuter Aircraft" (1988)

Clarke, Richard et al. "Current Fire Safety Design Aspects of Commuter Aircraft" , 1988
Export RIS Citation Information. TY - Tech Report AU - Clarke, Richard AU - Kane, Deborah AU - Stewart, Carla A2 - Events Analysis, Inc A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This study describes Fire Safety systems, cabin design and materials in cabin areas of ten common commuter aircraft. The aircraft were selected based upon a balance of current population and aircraft most commonly delivered. These aircraft represent 880 of 1100 commuter aircraft and probably will be the majority of the commuter fleet in the future. AN - dot:92918 ET - Final Report KW - Aircraft KW - Commuting KW - Fire resistance KW - Materials KW - Vehicle safety LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-03-01 SN - DOT/FAA/CT-87/32 TI - Current Fire Safety Design Aspects of Commuter Aircraft M3 - Tech Report N1 - United States N1 - DTFA03-86-C-00062 UR - https://rosap.ntl.bts.gov/view/dot/92918 ER - DB - ROSA P
An Evaluation of the Calderon Test

Csanyi, Ladis H. ;

Gumbert, Robert L.

1963-07-01 | PDF

The purposes of this project are threefold. First, to ascertain how the Calderon test might be used in testing Iowa Type A asphaltic concrete mixes. Second, to determine whether or not the Calderon test may be correlated with the Iowa Stability, the Marshall Stability, or the Hveem Stability tests. Third, to establish, if possible, mix design crite ...

08/10/2026

Title : An Evaluation of the Calderon Test Creator(s) : Csanyi, Ladis H.;Gumbert, Robert L.; Corporate Creator(s) : Iowa State University of Science and Technology Corporate Contributor(s) : Iowa Highway Research Board Published Date : 1963-07-01 Report Number : 442-S URL : https://rosap.ntl.bts.gov/view/dot/92917
Csanyi, Ladis H. and Gumbert, Robert L. (1963). An Evaluation of the Calderon Test.

Csanyi, Ladis H. and Gumbert, Robert L. "An Evaluation of the Calderon Test" (1963)

Csanyi, Ladis H. and Gumbert, Robert L. "An Evaluation of the Calderon Test" , 1963
Export RIS Citation Information. TY - Tech Report AU - Csanyi, Ladis H. AU - Gumbert, Robert L. A2 - Iowa State University of Science and Technology A3 - Iowa Highway Research Board AB - The purposes of this project are threefold. First, to ascertain how the Calderon test might be used in testing Iowa Type A asphaltic concrete mixes. Second, to determine whether or not the Calderon test may be correlated with the Iowa Stability, the Marshall Stability, or the Hveem Stability tests. Third, to establish, if possible, mix design criteria for the Calderon test in relation to Iowa Type A asphaltic concrete mixes. AN - dot:92917 KW - Alternatives analysis KW - Asphalt cement KW - Bituminous mixtures KW - Coarse aggregates KW - Coefficient of internal friction KW - Compression KW - Pendulum tests KW - Evaluation KW - Mix design KW - Shear strength KW - Marshall test LA - English PB - Iowa Highway Research Board PY - 1963-07-01 SN - 442-S TI - An Evaluation of the Calderon Test M3 - Tech Report N1 - United States N1 - H.R. 80 UR - https://rosap.ntl.bts.gov/view/dot/92917 ER - DB - ROSA P
Traffic Forecasting for Pavement Design

Desai, Harshad ;

Reel, Rick

1986-12-01 | PDF

The need for improved traffic estimation procedures has been emphasized by several studies that demonstrated that previously available data were not adequate. Some data were not considered representative of actual traffic conditions because of overloaded trucks avoiding weighing scales and insufficient traffic sampling programs. In addition, previo ...

08/10/2026

Title : Traffic Forecasting for Pavement Design Creator(s) : Desai, Harshad;Reel, Rick;Deen, R.;Tabery, Vernon L.;Noble, Ronald;Hallenbeck, Mark;Crimmins, Dennis;Cunagin, Wiley; Corporate Creator(s) : Florida. Department of Transportation;Kentucky. Transportation Cabinet;Oregon. Department of Transportation;Washington (State). Department of Transportation;Texas Transportation Institute; Corporate Contributor(s) : United States. Federal Highway Administration. Office of Implementation;United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center; Contributor(s) : Brown, Douglas Published Date : 1986-12-01 Report Number : FHWA-TS-86-225 URL : https://rosap.ntl.bts.gov/view/dot/92916
Desai, Harshad et al. (1986). Traffic Forecasting for Pavement Design.

Desai, Harshad et al. "Traffic Forecasting for Pavement Design" (1986)

Desai, Harshad et al. "Traffic Forecasting for Pavement Design" , 1986
Export RIS Citation Information. TY - Tech Report AU - Desai, Harshad AU - Reel, Rick AU - Deen, R. AU - Tabery, Vernon L. AU - Noble, Ronald AU - Hallenbeck, Mark AU - Crimmins, Dennis AU - Cunagin, Wiley A2 - Florida. Department of Transportation A2 - Kentucky. Transportation Cabinet A2 - Oregon. Department of Transportation A2 - Washington (State). Department of Transportation A2 - Texas Transportation Institute A3 - United States. Federal Highway Administration. Office of Implementation A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center A4 - Brown, Douglas A4 - Brown, Douglas J. AB - The need for improved traffic estimation procedures has been emphasized by several studies that demonstrated that previously available data were not adequate. Some data were not considered representative of actual traffic conditions because of overloaded trucks avoiding weighing scales and insufficient traffic sampling programs. In addition, previous forecasting procedures did not reflect the increases in legal load limits, the significant increase in the number of heavy trucks, or the shift toward larger vehicle types that has occurred in recent years. Improved estimates of current traffic loadings based on larger samples of much higher quality data would allow development of procedures for making improved estimates of historical traffic loadings and better forecasts of traffic loadings during the design period. The emergence of automatic vehicle classification equipment, permanent and portable weigh-in-motion (WIM) systems, and the application of microprocessors and microcomputers to these data acquisition functions now offer tools that may be used effectively in meeting these needs. Representatives from four states (Florida, Kentucky, Oregon and Washington) met on several occasions to discuss the subject of traffic forecasting for pavement design. Information was compiled on all aspects of the traffic forecasting process, options were presented for each step of the process, and recommendations were developed to assist highway agencies in improving current practices and procedures. AN - dot:92916 ET - Final Report KW - Forecasting KW - Algorithms KW - Pavement design KW - Traffic forecasting KW - Annual average daily traffic LA - English PB - United States. Federal Highway Administration. Office of Implementation PY - 1986-12-01 SN - FHWA-TS-86-225 TI - Traffic Forecasting for Pavement Design M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92916 ER - DB - ROSA P
Fargo-Moorhead Metro Traffic Data Collection and Reporting - Phase II

Sharma, Kshitij

2024-09-01 | PDF

For the current Phase II project, 42 additional intersections were set up for data collection and analysis, bringing the total area locations reporting data to more than 70 (considering those from NDDOT as well). The intersections for each agency are listed in tables below. Note again that similar to the pilot project, this phase of traffic data co ...

08/10/2026

Title : Fargo-Moorhead Metro Traffic Data Collection and Reporting - Phase II Creator(s) : Sharma, Kshitij Corporate Creator(s) : Upper Great Plains Transportation Institute Corporate Contributor(s) : Fargo-Moorhead Metropolitan Council of Governments Published Date : 2024-09-01 URL : https://rosap.ntl.bts.gov/view/dot/92915
Sharma, Kshitij (2024). Fargo-Moorhead Metro Traffic Data Collection and Reporting - Phase II.

Sharma, Kshitij "Fargo-Moorhead Metro Traffic Data Collection and Reporting - Phase II" (2024)

Sharma, Kshitij "Fargo-Moorhead Metro Traffic Data Collection and Reporting - Phase II" , 2024
Export RIS Citation Information. TY - Tech Report AU - Sharma, Kshitij A2 - Upper Great Plains Transportation Institute A3 - Fargo-Moorhead Metropolitan Council of Governments AB - For the current Phase II project, 42 additional intersections were set up for data collection and analysis, bringing the total area locations reporting data to more than 70 (considering those from NDDOT as well). The intersections for each agency are listed in tables below. Note again that similar to the pilot project, this phase of traffic data collection and reporting used already-existing infrastructure without the need to purchase or maintain any additional traffic data collection devices. The mostly under-utilized or un-utilized capabilities of the existing transportation infrastructure devices combined with UGPTI's capabilities and innovative approach have made it possible to gather traffic data 24 hours per day, 7 days per week, and 365 days per year. AN - dot:92915 ET - Final Report KW - Data collection KW - Signalized intersections KW - Traffic data KW - Data quality KW - Pedestrian counts KW - Reports KW - Data analysis KW - Infrastructure KW - Data collection KW - Signalized intersections KW - Traffic data LA - English PB - Upper Great Plains Transportation Institute PY - 2024-09-01 TI - Fargo-Moorhead Metro Traffic Data Collection and Reporting - Phase II M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92915 ER - DB - ROSA P
Considerations for Vehicles With Automated Driving Systems: Seating Preference Study

Anderson, G. T. ;

Klauer, S. G.

2026-08-01 | PDF

This VTTI study examined passenger seat belt behavior and seating preference in ADS-DVs with different seating arrangements: conventional, conventional with no manually operated controls, and an unconventional layout with a rear-facing and a forward-facing row of seats. They were recruited under the guise of testing rideshare applications in those ...

08/10/2026

Title : Considerations for Vehicles With Automated Driving Systems: Seating Preference Study Creator(s) : Anderson, G. T.;Klauer, S. G.;Radlbeck, J.;Trimble, T.; Corporate Creator(s) : Virginia Tech Transportation Institute Corporate Contributor(s) : United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Vehicle Safety Research Published Date : 2026-08-01 Report Number : DOT HS 813 793 DOI : https://doi.org/10.21949/8e2a-pa23
Anderson, G. T. et al. (2026). Considerations for Vehicles With Automated Driving Systems: Seating Preference Study. https://doi.org/10.21949/8e2a-pa23

Anderson, G. T. et al. "Considerations for Vehicles With Automated Driving Systems: Seating Preference Study" (2026), https://doi.org/10.21949/8e2a-pa23

Anderson, G. T. et al. "Considerations for Vehicles With Automated Driving Systems: Seating Preference Study" , 2026, https://doi.org/10.21949/8e2a-pa23
Export RIS Citation Information. TY - Tech Report AU - Anderson, G. T. AU - Klauer, S. G. AU - Radlbeck, J. AU - Trimble, T. A2 - Virginia Tech Transportation Institute A3 - United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Vehicle Safety Research AB - This VTTI study examined passenger seat belt behavior and seating preference in ADS-DVs with different seating arrangements: conventional, conventional with no manually operated controls, and an unconventional layout with a rear-facing and a forward-facing row of seats. They were recruited under the guise of testing rideshare applications in those three vehicles. Seat belt buckling was observed, with all passengers buckled in prior to requesting to start the ride on 94% of trips. Results also showed passengers preferred sitting in the front row in a conventional vehicle or in forward-facing seats of an unconventional seating layout. AN - dot:92914 DO - https://doi.org/10.21949/8e2a-pa23 KW - Automated vehicle control KW - Driving automation levels KW - Level 4 driving automation KW - Seat belt use KW - Seats KW - SAE Level 4 KW - ADS-DV KW - ADS-dedicated vehicle KW - Seating preference LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 2026-08-01 SN - DOT HS 813 793 TI - Considerations for Vehicles With Automated Driving Systems: Seating Preference Study M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92914 ER - DB - ROSA P
Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers

Alexander, Christopher L. ;

Sagüés, Alberto A.

2026-07-01 | PDF

The University of South Florida's Corrosion Research Laboratory previously developed a tendon imaging unit (TIU) capable of providing representative cross-section images of external tendons that show strand envelope position and the likelihood of grouting deficiencies. The objective of this work was to adapt the grout-based TIU for application to w ...

08/10/2026

Title : Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers Creator(s) : Alexander, Christopher L.;Sagüés, Alberto A.;Karki, Mahesh;Kandel, Laxmi; Corporate Creator(s) : University of South Florida. Department of Civil and Environmental Engineering Corporate Contributor(s) : Florida. Department of Transportation Published Date : 2026-07-01 URL : https://rosap.ntl.bts.gov/view/dot/92913
Alexander, Christopher L. et al. (2026). Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers.

Alexander, Christopher L. et al. "Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers" (2026)

Alexander, Christopher L. et al. "Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers" , 2026
Export RIS Citation Information. TY - Tech Report AU - Alexander, Christopher L. AU - Sagüés, Alberto A. AU - Karki, Mahesh AU - Kandel, Laxmi A2 - University of South Florida. Department of Civil and Environmental Engineering A3 - Florida. Department of Transportation AB - The University of South Florida's Corrosion Research Laboratory previously developed a tendon imaging unit (TIU) capable of providing representative cross-section images of external tendons that show strand envelope position and the likelihood of grouting deficiencies. The objective of this work was to adapt the grout-based TIU for application to wax-filled external tendons. After characterization of the electrical properties of FDOT approved waxes, it became apparent that adaptation to wax-filled tendons would require sophisticated signal analysis to account for the limited difference between the dielectric constant for wax and air. An analysis approach was developed in which the magnetic signal is converted to a representative impedance signal considering a flaw-free, completely wax-filled condition. Comparison between the magnetic-signal recovered impedance and the measured impedance facilitates deficiency detection. Air void and water pocket deficiency detection with cross-section image recovery was demonstrated for a series of strand configurations and fill conditions. In a parallel thrust, an initial design for a rotation-free TIU was developed, and preliminary testing confirmed the capability of recovering strand position. This is a particularly promising advancement that with further development could result in increased ability to rapidly scan external tendons to facilitate bridge-scale testing or monitoring systems. AN - dot:92913 ET - Draft Final Report: 03/15/2024 - 07/31/2026 KW - Reconstruction KW - Magnets KW - Sensors KW - Mechanical impedance KW - Testing KW - Monitoring KW - Fillers KW - Bridge design KW - Image reconstruction KW - magnetic sensor KW - impedance KW - convolution LA - English PB - Florida. Department of Transportation PY - 2026-07-01 TI - Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers M3 - Tech Report N1 - United States N1 - BED25-977-20 UR - https://rosap.ntl.bts.gov/view/dot/92913 ER - DB - ROSA P
Bond Performance Between Precast UHPC Substrates and Field-Cast UHPC Connections

Lau, Kingsley ;

Permeh, Samanbar

2026-06-01 | PDF

Ultra-high performance concrete (UHPC) has been used in different applications and was explored to be used for precast elements; however, there was limited research and guidance on the connection between UHPC elements. General test methods to evaluate interface strength (e.g., direct tension pulloff, shear pushoff) can be used with the Mohr-Coulomb ...

08/10/2026

Title : Bond Performance Between Precast UHPC Substrates and Field-Cast UHPC Connections Creator(s) : Lau, Kingsley;Permeh, Samanbar;Garber, David; Corporate Creator(s) : Florida International University Corporate Contributor(s) : Florida. Department of Transportation Published Date : 2026-06-01 URL : https://rosap.ntl.bts.gov/view/dot/92912
Lau, Kingsley et al. (2026). Bond Performance Between Precast UHPC Substrates and Field-Cast UHPC Connections.

Lau, Kingsley and Permeh, Samanbar and Garber, David "Bond Performance Between Precast UHPC Substrates and Field-Cast UHPC Connections" (2026)

Lau, Kingsley et al. "Bond Performance Between Precast UHPC Substrates and Field-Cast UHPC Connections" , 2026
Export RIS Citation Information. TY - Tech Report AU - Lau, Kingsley AU - Permeh, Samanbar AU - Garber, David A2 - Florida International University A3 - Florida. Department of Transportation AB - Ultra-high performance concrete (UHPC) has been used in different applications and was explored to be used for precast elements; however, there was limited research and guidance on the connection between UHPC elements. General test methods to evaluate interface strength (e.g., direct tension pulloff, shear pushoff) can be used with the Mohr-Coulomb Friction Approach to determine the cohesion coefficient and coefficient of friction typically used to estimate interface shear strength. The test program here sought to explore the bond behavior of matchcast UHPC with various interface surface conditions, such as surface roughness (including smooth faces cast on plywood formwork, roughened surfaces created by casting on form liners) and exposed steel fibers at the interface (created by the use of paste retarders) in order to inform design provisions for matchcast UHPC. The effect of pre-corroded steel fibers and the surface wetting conditions were considered as well. Trends in interface shear behavior associated with surface conditions were identified. The most evident outcome from testing was that the presence of exposed steel fibers provided improved performance relative to only roughened surfaces. Roughened interfaces can improve the friction of the interface, but the presence of the exposed fibers improved both cohesive strength and provided improvement to the post-crack tensile strength. Additionally, there was improved cohesive bonding when prolonged wetting by burlap was made. Extended term ponding had reduced performance. Cohesion coefficient and friction factors for the various test conditions were assessed. Modification to interface shear strength provisions to include the effect of wetting conditions on cohesion was presented. The experimental work provided practical experiences that were translated into considerations for construction. AN - dot:92912 ET - Draft Final Report: February 2022 - June 2026 KW - Ultra high performance concrete KW - Shear properties KW - Interfaces KW - Casting KW - Precast concrete KW - Fibers KW - Corrosion KW - Wetting KW - Bonding KW - Structural connection KW - Interface Shear KW - Match LA - English PB - Florida. Department of Transportation PY - 2026-06-01 TI - Bond Performance Between Precast UHPC Substrates and Field-Cast UHPC Connections M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92912 ER - DB - ROSA P
An Experimental and Theoretical Study of the Ice Accretion Process During Artificial and Natural Icing Conditions

Kirby, Mark S. ;

Hansman, R. John

1988-04-01 | PDF

Real-time measurements of ice growth during artificial and natural icing conditions were conducted using an ultrasonic pulse-echo technique. This technique allows ice thickness to be measured with an accuracy of + or - 0.5 mm; in addition, the ultrasonic signal characteristics may be used to detect the presence of liquid on the ice surface and henc ...

08/10/2026

Title : An Experimental and Theoretical Study of the Ice Accretion Process During Artificial and Natural Icing Conditions Creator(s) : Kirby, Mark S.;Hansman, R. John; Corporate Creator(s) : Massachusetts Institute of Technology Corporate Contributor(s) : Lewis Research Center;United States. National Aeronautics and Space Administration; Published Date : 1988-04-01 Report Number : DOTIFAAICT-87117 URL : https://rosap.ntl.bts.gov/view/dot/92911
Kirby, Mark S. and Hansman, R. John (1988). An Experimental and Theoretical Study of the Ice Accretion Process During Artificial and Natural Icing Conditions.

Kirby, Mark S. and Hansman, R. John "An Experimental and Theoretical Study of the Ice Accretion Process During Artificial and Natural Icing Conditions" (1988)

Kirby, Mark S. and Hansman, R. John "An Experimental and Theoretical Study of the Ice Accretion Process During Artificial and Natural Icing Conditions" , 1988
Export RIS Citation Information. TY - Tech Report AU - Kirby, Mark S. AU - Hansman, R. John A2 - Massachusetts Institute of Technology A3 - Lewis Research Center A3 - United States. National Aeronautics and Space Administration AB - Real-time measurements of ice growth during artificial and natural icing conditions were conducted using an ultrasonic pulse-echo technique. This technique allows ice thickness to be measured with an accuracy of + or - 0.5 mm; in addition, the ultrasonic signal characteristics may be used to detect the presence of liquid on the ice surface and hence discern wet and dry ice growth behavior. Ice growth was measured on the stagnation line of a cylinder exposed to artificial icing conditions in the NASA Lewis Icing Research Tunnel (IRT), and similarly for a cylinder exposed in flight to natural icing conditions. Ice thickness was observed to increase approximately linearly with exposure time during the initial icing period. The ice accretion rate was found to vary with cloud temperature during wet ice growth, and liquid runback from the stagnation region was inferred. A steady-state energy balance model for the icing surface was used to compare heat transfer characteristics for IRT and natural icing conditions. Ultrasonic measurements of wet and dry ice growth observed in the IRT and in flight were compared with icing regimes predicted by a series of heat transfer coefficients. The heat transfer magnitude was generally inferred to be higher for the IRT than for the natural icing conditions encountered in flight. An apparent variation in the heat transfer magnitude was also observed for flights conducted through different natural icing-cloud formations. AN - dot:92911 KW - Icing KW - Ice formations KW - Flight tests KW - Water vapor KW - Ultrasonics KW - Ice accretion LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-04-01 SN - DOTIFAAICT-87117 TI - An Experimental and Theoretical Study of the Ice Accretion Process During Artificial and Natural Icing Conditions M3 - Tech Report N1 - United States N1 - NAG3-666 UR - https://rosap.ntl.bts.gov/view/dot/92911 ER - DB - ROSA P
The Effect of Weathering on Octane Quality for Winter-Grade and Summer-Grade Gasolines

Wares, Richard N.

1987-12-01 | PDF

Weathering tests were conducted to examine the effects on fuel volatility and octane characteristics. The commercially available gasolines utilized in the study represented a wide geographic distribution for both winter and summer fuels. Aging was accomplished by heating the fuel samples to 110 degrees F and maintaining that temperature for 48 hour ...

08/10/2026

Title : The Effect of Weathering on Octane Quality for Winter-Grade and Summer-Grade Gasolines Creator(s) : 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 : 1987-12-01 Report Number : DOT/FAA/CT-87/16 URL : https://rosap.ntl.bts.gov/view/dot/92910
Wares, Richard N. (1987). The Effect of Weathering on Octane Quality for Winter-Grade and Summer-Grade Gasolines.

Wares, Richard N. "The Effect of Weathering on Octane Quality for Winter-Grade and Summer-Grade Gasolines" (1987)

Wares, Richard N. "The Effect of Weathering on Octane Quality for Winter-Grade and Summer-Grade Gasolines" , 1987
Export RIS Citation Information. TY - Tech Report 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 - Weathering tests were conducted to examine the effects on fuel volatility and octane characteristics. The commercially available gasolines utilized in the study represented a wide geographic distribution for both winter and summer fuels. Aging was accomplished by heating the fuel samples to 110 degrees F and maintaining that temperature for 48 hours. Time histories of Reid Vapor Pressure (RVP) were conducted. Fuel octane evaluations, both HON and RON, were done. Component characterization by gas chromatography were made to identify components lost during the aging process. AN - dot:92910 ET - Final Report KW - Airplanes KW - Fires KW - Fuels KW - Gas chromatography KW - Gasoline KW - Testing LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1987-12-01 SN - DOT/FAA/CT-87/16 TI - The Effect of Weathering on Octane Quality for Winter-Grade and Summer-Grade Gasolines M3 - Tech Report N1 - United States N1 - DE-FC22-83FE60149 UR - https://rosap.ntl.bts.gov/view/dot/92910 ER - DB - ROSA P
Determination of Test Methods to Quantify the Effects of Organic and Inorganic Constituents in Silica Sand Used for Construction

Ferraro, Christopher C. ;

Riding, Kyle A.

2026-07-01 | PDF

Florida-produced fine aggregates are generally of suitable quality, and deleterious effects associated with organic matter are uncommon. However, naturally occurring organic constituents can affect cement hydration and early-age strength development depending on their concentration, composition, and interaction with cementitious phases. The sands e ...

08/10/2026

Title : Determination of Test Methods to Quantify the Effects of Organic and Inorganic Constituents in Silica Sand Used for Construction Creator(s) : Ferraro, Christopher C.;Riding, Kyle A.;Patel, Ashish D.;Gordillo, José Ignacio Dávila;Mueller, Timothy K.; Corporate Creator(s) : University of Florida, Gainesville. Engineering School of Sustainable Infrastructure and Environment (ESSIE) Corporate Contributor(s) : Florida. Department of Transportation Contributor(s) : Shoucair, John Published Date : 2026-07-01 Report Number : BED31-977-30 URL : https://rosap.ntl.bts.gov/view/dot/92909
Ferraro, Christopher C. et al. (2026). Determination of Test Methods to Quantify the Effects of Organic and Inorganic Constituents in Silica Sand Used for Construction.

Ferraro, Christopher C. et al. "Determination of Test Methods to Quantify the Effects of Organic and Inorganic Constituents in Silica Sand Used for Construction" (2026)

Ferraro, Christopher C. et al. "Determination of Test Methods to Quantify the Effects of Organic and Inorganic Constituents in Silica Sand Used for Construction" , 2026
Export RIS Citation Information. TY - Tech Report AU - Ferraro, Christopher C. AU - Riding, Kyle A. AU - Patel, Ashish D. AU - Gordillo, José Ignacio Dávila AU - Mueller, Timothy K. A2 - University of Florida, Gainesville. Engineering School of Sustainable Infrastructure and Environment (ESSIE) A3 - Florida. Department of Transportation A4 - Shoucair, John AB - Florida-produced fine aggregates are generally of suitable quality, and deleterious effects associated with organic matter are uncommon. However, naturally occurring organic constituents can affect cement hydration and early-age strength development depending on their concentration, composition, and interaction with cementitious phases. The sands evaluated in this study contained relatively low organic contents, making establishment of a universal organic-content threshold impractical. FDOT currently uses AASHTO T 21 as the primary screening method for potentially deleterious organic impurities and requires AASHTO T 71 testing when screening results indicate concern. This framework should be maintained. AASHTO T 21 provides effective statewide screening, while AASHTO T 71 provides performance-based confirmation. However, AASHTO T 21 is qualitative, and AASHTO T 71 requires extended testing that can delay aggregate acceptance decisions. Neither elemental analysis nor the Modified Walkley-Black method demonstrated sufficient precision, consistency, or correlation with AASHTO T 21 to support statewide acceptance criteria. However, MWB may be used to establish mine-specific organic-carbon baselines, and isothermal calorimetry may be used to establish mine-specific hydration-response baselines. Deviations from these baselines may indicate the need for additional evaluation, including AASHTO T 71 testing. Organic-carbon contents below approximately 0.015% did not measurably affect hydration or compressive strength. Alkaline washing reduced measured organic content and increased pH but did not consistently improve strength. The ASTM C109 hand-tamped consolidation procedure is recommended for AASHTO T 71 mortar cube fabrication. Trace inorganic constituents, including phosphorus, did not produce measurable strength effects. AN - dot:92909 ET - Final Report: June, 2024 - July, 2026 KW - Silica sands KW - Fine aggregates KW - Impurities KW - Organic materials KW - Testing KW - Sand KW - Construction KW - Performance measurement KW - Hydration KW - Data analysis KW - Cement KW - Organic Impurities KW - AASHTO T 21 KW - AASHTO T 71 KW - Modified Walkley-Black KW - Isothermal Conduction Calorimetry LA - English PB - Florida. Department of Transportation PY - 2026-07-01 SN - BED31-977-30 TI - Determination of Test Methods to Quantify the Effects of Organic and Inorganic Constituents in Silica Sand Used for Construction M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92909 ER - DB - ROSA P
Review of State Comprehensive Computerized Highway Information System

Duffy, T. ;

Wyznyckyj, L.

1987-05-01 | PDF

This report presents an overview of where the computerized highway information system is now, and its status as a planning and programming tool for state highway agencies. A computerized highway information system is simply a computer linked system which can be used by many divisions of a transportation agency to obtain information to meet data rep ...

08/10/2026

Title : Review of State Comprehensive Computerized Highway Information System Creator(s) : Duffy, T.;Wyznyckyj, L.; Corporate Creator(s) : Urbitran Associates Corporate Contributor(s) : United States. Federal Highway Administration. Office of Implementation Contributor(s) : Hatzi, Peter J. Published Date : 1987-05-01 Report Number : FHWA-TS-87-220 URL : https://rosap.ntl.bts.gov/view/dot/92908
Duffy, T. and Wyznyckyj, L. (1987). Review of State Comprehensive Computerized Highway Information System.

Duffy, T. and Wyznyckyj, L. "Review of State Comprehensive Computerized Highway Information System" (1987)

Duffy, T. and Wyznyckyj, L. "Review of State Comprehensive Computerized Highway Information System" , 1987
Export RIS Citation Information. TY - Tech Report AU - Duffy, T. AU - Wyznyckyj, L. A2 - Urbitran Associates A3 - United States. Federal Highway Administration. Office of Implementation A4 - Hatzi, Peter J. A4 - Hatzi, P.J. AB - This report presents an overview of where the computerized highway information system is now, and its status as a planning and programming tool for state highway agencies. A computerized highway information system is simply a computer linked system which can be used by many divisions of a transportation agency to obtain information to meet data reporting, analyses or other informational needs. The description of the highway information system includes: current use and status, applications, organization and system development, benefits and problems. AN - dot:92908 ET - Final Report KW - Computer programming KW - Information systems KW - Planning KW - State departments of transportation KW - Datasets LA - English PB - United States. Federal Highway Administration. Office of Implementation PY - 1987-05-01 SN - FHWA-TS-87-220 TI - Review of State Comprehensive Computerized Highway Information System M3 - Tech Report N1 - United States N1 - DTFH61-P4-C-OOO14 N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92908 ER - DB - ROSA P

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