The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
The main objectives of this research are: a) Implementation of the self-cleaning Design A in the downstream area of the FHWA #031711 culvert using guidelines developed through previous TR 619 research. b) Monitoring and assessing the overall pre-construction behavior of the FHWA #364790 located immediately downstream the FHWA #031711 culvert. c) De
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Muste, M. (2020). Development of Self-Cleaning Box Culvert Design Phase III [Tech Brief] (Report No. TR-719). Iowa Highway Research Board. https://rosap.ntl.bts.gov/view/dot/79706
Muste, Marian. Development of Self-Cleaning Box Culvert Design Phase III [Tech Brief]. Report no. TR-719. Iowa Highway Research Board, 2020. https://rosap.ntl.bts.gov/view/dot/79706.
Muste, Marian Development of Self-Cleaning Box Culvert Design Phase III [Tech Brief]. Iowa Highway Research Board, 2020, Report no. TR-719, ROSA P. https://rosap.ntl.bts.gov/view/dot/79706.
Truncated base mechanically-stabilized earth (MSE) walls are the MSE walls with narrow base excavation length and steep excavation slope designed to save construction cost while pushing the technological envelope of geosynthetic reinforcement development. A wall with truncated geometry of a narrow base length and steep excavation slope can signific
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Chang, N. Y., Nghiem, H. M., & Wang, S. C. (2020). Analyze and Validate Bearing Pressure Requirements for Truncated Base Mechanically-Stabilized Earth/Geosynthetically-Reinforced Soil (GRS) Walls (Report No. CDOT2020-01). Colorado. Dept. of Transportation. Research Branch. https://rosap.ntl.bts.gov/view/dot/62412
Chang, Nien-Yin, Hien Manh Nghiem, and Shing-Chun Wang. Analyze and Validate Bearing Pressure Requirements for Truncated Base Mechanically-Stabilized Earth/Geosynthetically-Reinforced Soil (GRS) Walls. Report no. CDOT2020-01. Colorado. Dept. of Transportation. Research Branch, 2020. https://rosap.ntl.bts.gov/view/dot/62412.
Chang, Nien-Yin, et al. Analyze and Validate Bearing Pressure Requirements for Truncated Base Mechanically-Stabilized Earth/Geosynthetically-Reinforced Soil (GRS) Walls. Colorado. Dept. of Transportation. Research Branch, 2020, Report no. CDOT2020-01, ROSA P. https://rosap.ntl.bts.gov/view/dot/62412.
Advanced technology solutions underpin the 2030 Target for the Clean Fleet Initiative, based onexpectations that these technologies will be implementable in a wide range of City vehicles. Within the target vehicle population, a number of special applications have been identified that need additional research to anticipate and mitigate potential imp
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Epstein, A. K., & Cutler, C. (2020). Cambridge Clean Fleet Initiative: Technical Assistance for Selected Special Applications of Clean Fleet Technologies (Report No. DOT-VNTSC-CDPW-20-01). John A. Volpe National Transportation Systems Center (U.S.). https://rosap.ntl.bts.gov/view/dot/59017
Epstein, Alexander K. and Chris Cutler. Cambridge Clean Fleet Initiative: Technical Assistance for Selected Special Applications of Clean Fleet Technologies. Report no. DOT-VNTSC-CDPW-20-01. John A. Volpe National Transportation Systems Center (U.S.), 2020. https://rosap.ntl.bts.gov/view/dot/59017.
Epstein, Alexander K., and Chris Cutler Cambridge Clean Fleet Initiative: Technical Assistance for Selected Special Applications of Clean Fleet Technologies. John A. Volpe National Transportation Systems Center (U.S.), 2020, Report no. DOT-VNTSC-CDPW-20-01, ROSA P. https://rosap.ntl.bts.gov/view/dot/59017.
Asset management is critical for local and state governments to not only track assets but to also plan for maintenance of assets that will provide the greatest return on investment for the agency. The use of geographic information system (GIS) applications, tools and geospatial data can provide agencies with the most accurate inventory of assets, a
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Morris, C., Theroux, A., & Kline, C. F. (2020). GIS Tools and Apps – Integration With Asset Management (Report No. MN/RC 2020RIC15). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/62205
Morris, Cinde, Annette Theroux, and Christine F. Kline. GIS Tools and Apps – Integration With Asset Management. Report no. MN/RC 2020RIC15. Minnesota. Department of Transportation. Office of Research & Innovation, 2020. https://rosap.ntl.bts.gov/view/dot/62205.
Morris, Cinde, et al. GIS Tools and Apps – Integration With Asset Management. Minnesota. Department of Transportation. Office of Research & Innovation, 2020, Report no. MN/RC 2020RIC15, ROSA P. https://rosap.ntl.bts.gov/view/dot/62205.
The Kentucky Transportation Cabinet (KYTC) reimburses publicly operated ferries, including when they cease operations due to severe weather or unforeseen events. Reimbursement procedures are not codified in law and are largely based on historical practice. To determine how the Cabinet should handle reimbursement, funding, oversight of ferry service
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Marks, P. G., Gibson, B., Martin, A., & Kreis, D. (2020). Analysis and Assessment of the Reimbursement Rates and Mechanisms for Kentucky’s Publicly Funded Ferries (Report No. KTC-20-04/PL35-1F). University of Kentucky Transportation Center. https://doi.org/10.13023/ktc.rr.2020.04
Marks, P Gayle, Bryan Gibson, Andrew Martin, and Doug Kreis. Analysis and Assessment of the Reimbursement Rates and Mechanisms for Kentucky’s Publicly Funded Ferries. Report no. KTC-20-04/PL35-1F. University of Kentucky Transportation Center, 2020. https://doi.org/10.13023/ktc.rr.2020.04.
Marks, P Gayle, et al. Analysis and Assessment of the Reimbursement Rates and Mechanisms for Kentucky’s Publicly Funded Ferries. University of Kentucky Transportation Center, 2020, Report no. KTC-20-04/PL35-1F, ROSA P. https://doi.org/10.13023/ktc.rr.2020.04.
States’ Departments of Transportation (DOT) are trying to utilize the best practices of managing low-volume roads (LVRs) due to limited resources and declined transportation funding. Diverse maintenance practices and fluctuating budget allocations are noticed on LVRs which significantly impact the overall pavement performance. In this study, the op
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Hafez, M., Ksaibati, K., & Atadero, R. A. (2020). Supporting Pavement Maintenance Decisions of Low-Volume Roads In Colorado Using Optimization Analysis and Artificial-Intelligence Techniques (Report No. CDOT-2020-03). Colorado. Dept. of Transportation. Applied Research and Innovation Branch. https://rosap.ntl.bts.gov/view/dot/54758
Hafez, Marwan, Khaled Ksaibati, and Rebecca Anne Atadero. Supporting Pavement Maintenance Decisions of Low-Volume Roads In Colorado Using Optimization Analysis and Artificial-Intelligence Techniques. Report no. CDOT-2020-03. Colorado. Dept. of Transportation. Applied Research and Innovation Branch, 2020. https://rosap.ntl.bts.gov/view/dot/54758.
Hafez, Marwan, et al. Supporting Pavement Maintenance Decisions of Low-Volume Roads In Colorado Using Optimization Analysis and Artificial-Intelligence Techniques. Colorado. Dept. of Transportation. Applied Research and Innovation Branch, 2020, Report no. CDOT-2020-03, ROSA P. https://rosap.ntl.bts.gov/view/dot/54758.
Ultra-high performance concrete (UHPC), fiber-reinforced self-consolidating concrete, and magnesium-alumino-liquid-phosphate (MALP) concrete all have significant potential for use in bridge repair in Oklahoma. The project described in this report examined the use of these materials in repairs of prestressed concrete girder continuity connections an
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Floyd, R., Volz, J. S., Looney, T., Mesigh, M., Ahmadi, M., Roswurm, S., Huynh, P., & Manwarren, M. (2020). Evaluation of Ultra-High Performance Concrete, Fiber Reinforced Self-Consolidating Concrete, and MALP Concrete for Prestressed Girder Repair (Report No. FHWA-OK-21-03). Oklahoma. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/57403
Floyd, Royce, Jeffery S. Volz, Trevor Looney, Michael Mesigh, Mujtaba Ahmadi, Stephen Roswurm, Phuoc Huynh, and Michelle Manwarren. Evaluation of Ultra-High Performance Concrete, Fiber Reinforced Self-Consolidating Concrete, and MALP Concrete for Prestressed Girder Repair. Report no. FHWA-OK-21-03. Oklahoma. Department of Transportation, 2020. https://rosap.ntl.bts.gov/view/dot/57403.
Floyd, Royce, et al. Evaluation of Ultra-High Performance Concrete, Fiber Reinforced Self-Consolidating Concrete, and MALP Concrete for Prestressed Girder Repair. Oklahoma. Department of Transportation, 2020, Report no. FHWA-OK-21-03, ROSA P. https://rosap.ntl.bts.gov/view/dot/57403.
In this project, photoluminescent stones and solar photovoltaic modules by Wattway were investigated as a means to provide lighting to pedestrian areas and heavily trafficked roadways/pathways. The photovoltaic modules by Wattway were not able to be delivered as scheduled because of manufacturing defects and thus this phase of the project was put o
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Scheffe, J. (2020). Design and Construction of an Integrated Solar Lighting Pedestrian Crosswalk(s) and Sidewalks with Enhanced Visibility. Florida. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/59889
Scheffe, Jonathan. Design and Construction of an Integrated Solar Lighting Pedestrian Crosswalk(s) and Sidewalks with Enhanced Visibility. Florida. Department of Transportation, 2020. https://rosap.ntl.bts.gov/view/dot/59889.
Scheffe, Jonathan Design and Construction of an Integrated Solar Lighting Pedestrian Crosswalk(s) and Sidewalks with Enhanced Visibility. Florida. Department of Transportation, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/59889.
Natural or man-made hazards that require evacuation put already vulnerable populations in a more precarious situation. When plans and decisions about evacuation are made, access to a private car is typically assumed, and differences in income levels across a community are rarely taken into account. The result is that carless members of a community
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Cirillo, C., Nejad, M. M., Erdogan, S., & Chavis, C. (2020). E3: Evaluating Equity in Evacuation: A Practical Tool and a Case Study. Urban Mobility & Equity Center. https://rosap.ntl.bts.gov/view/dot/54891
Cirillo, Cinzia, Mohammad M Nejad, Sevgi Erdogan, and Celeste Chavis. E3: Evaluating Equity in Evacuation: A Practical Tool and a Case Study. Urban Mobility & Equity Center, 2020. https://rosap.ntl.bts.gov/view/dot/54891.
Cirillo, Cinzia, et al. E3: Evaluating Equity in Evacuation: A Practical Tool and a Case Study. Urban Mobility & Equity Center, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/54891.
The coordination and integration of transportation and land use (also known as “smart growth”) has been a long-standing goal for planning and engineering professionals, but to this day remains an elusive concept to realize. As this approach is a widely recognized as key to achieving sustainable, livable, and equitable (SLE) outcomes for individuals
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Appleyard, B. S., Allen, C. J., & Stanton, J. (2020). A Smart Growth & Equity Framework and Tool for Measuring, Understanding, and Realizing Transportation Land Use Coordination for Sustainability, Livability, and Equity (Report No. 20-02, CA-MTI-1899). Mineta Transportation Institute. https://doi.org/10.31979/mti.2020.1899
Appleyard, Bruce S., Christopher J. Allen, and Jonathan Stanton. A Smart Growth & Equity Framework and Tool for Measuring, Understanding, and Realizing Transportation Land Use Coordination for Sustainability, Livability, and Equity. Report no. 20-02, CA-MTI-1899. Mineta Transportation Institute, 2020. https://doi.org/10.31979/mti.2020.1899.
Appleyard, Bruce S., et al. A Smart Growth & Equity Framework and Tool for Measuring, Understanding, and Realizing Transportation Land Use Coordination for Sustainability, Livability, and Equity. Mineta Transportation Institute, 2020, Report no. 20-02, CA-MTI-1899, ROSA P. https://doi.org/10.31979/mti.2020.1899.
A static load test was performed at the foundation for the north pier of proposed Bridge No. HAM-751292 in Cincinnati, Ohio. The bridge carries Shepherd Lane over I-75. The piles are 14-inch diameter pipe piles, driven with a plate covering the pile tip and then filled with concrete. The ultimate bearing value (UBV) is 226 kips. This corresponds to
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Narsavage, P. (2020). Dynamic and Static Load Testing Bridge No. HAM-75-1292 Shepherd Lane over I-75 Static Load Test (Report No. FHWA/OH-2020/4). Ohio. Dept. of Transportation. Office of Statewide Planning and Research. https://rosap.ntl.bts.gov/view/dot/64562
Narsavage, Peter. Dynamic and Static Load Testing Bridge No. HAM-75-1292 Shepherd Lane over I-75 Static Load Test. Report no. FHWA/OH-2020/4. Ohio. Dept. of Transportation. Office of Statewide Planning and Research, 2020. https://rosap.ntl.bts.gov/view/dot/64562.
Narsavage, Peter Dynamic and Static Load Testing Bridge No. HAM-75-1292 Shepherd Lane over I-75 Static Load Test. Ohio. Dept. of Transportation. Office of Statewide Planning and Research, 2020, Report no. FHWA/OH-2020/4, ROSA P. https://rosap.ntl.bts.gov/view/dot/64562.
This study explores the potential to promote lower-emissions air travel by providing consumers with information about the carbon emissions of alternative flight choices in the context of online flight search and booking. Researchers surveyed over 450 UC Davis faculty, researchers, and staff, asking them to choose among hypothetical flight options f
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Amenta, N., & Sanguinetti, A. (2020). Adding Carbon to the Equation in Online Flight Search (Report No. NCST-UCD-RR-20-06). University of California, Davis. Institute of Transportation Studies. https://doi.org/10.7922/G2KD1W4N
Amenta, Nina and Angela Sanguinetti. Adding Carbon to the Equation in Online Flight Search. Report no. NCST-UCD-RR-20-06. University of California, Davis. Institute of Transportation Studies, 2020. https://doi.org/10.7922/G2KD1W4N.
Amenta, Nina, and Angela Sanguinetti Adding Carbon to the Equation in Online Flight Search. University of California, Davis. Institute of Transportation Studies, 2020, Report no. NCST-UCD-RR-20-06, ROSA P. https://doi.org/10.7922/G2KD1W4N.
During winter road maintenance operations, the Iowa Department of Transportation (DOT) is responsible for servicing 24,000 lane miles of roadways, including Interstates, US highways, and Iowa roads. This project focused on operations for District 3, located in northwest Iowa, which services about 4,000 lane miles from 20 depots. Two optimization pr
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Dong, J., Zhang, L., & Yang, Y. (2020). Iowa DOT Office of Maintenance Snowplow Optimization (Report No. InTrans Project 17-626). Iowa. Dept. of Transportation. https://rosap.ntl.bts.gov/view/dot/54553
Dong, Jing, Luning Zhang, and Yilun Yang. Iowa DOT Office of Maintenance Snowplow Optimization. Report no. InTrans Project 17-626. Iowa. Dept. of Transportation, 2020. https://rosap.ntl.bts.gov/view/dot/54553.
Dong, Jing, et al. Iowa DOT Office of Maintenance Snowplow Optimization. Iowa. Dept. of Transportation, 2020, Report no. InTrans Project 17-626, ROSA P. https://rosap.ntl.bts.gov/view/dot/54553.
This report compares the socioeconomic factors, urban locations, and commute patterns of urban workers in the United States and Mexico. The US dataset contains information on 3.5 million commuters over 4 years of the American Community Survey (ACS) Public Use Microdata Sample (PUMS), representing 98 million workers in total in the 100 largest metro
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Guerra, E., Benitez, J. P., Caudillo, C., Cheyette, A., Hassall, L., Li, M., Li, S., Narayan, N., Reyes, A., Sandweiss, A., Wang, J., Weidman, J., Yuan, J., & Zhang, H. (2020). Transportation and Land Use across US and Mexican Urban Areas (Report No. CM2-30/43). University of Texas at Austin. Cooperative Mobility for Competitive Megaregions. https://rosap.ntl.bts.gov/view/dot/54764
Guerra, Erick, Juan Pablo Benitez, Camilo Caudillo, Anna Cheyette, Luke Hassall, Meiqing Li, and Shengxiao Li, et al.. Transportation and Land Use across US and Mexican Urban Areas. Report no. CM2-30/43. University of Texas at Austin. Cooperative Mobility for Competitive Megaregions, 2020. https://rosap.ntl.bts.gov/view/dot/54764.
Guerra, Erick, et al. Transportation and Land Use across US and Mexican Urban Areas. University of Texas at Austin. Cooperative Mobility for Competitive Megaregions, 2020, Report no. CM2-30/43, ROSA P. https://rosap.ntl.bts.gov/view/dot/54764.
Experimental research addressing the bond performance, transfer and development length of 1-1/8 in. diameter grade 250 strands to concrete is presented in this report. Three different bond testing methodologies were employed to appraise the pullout force values of the strands in concrete and mortar, namely the Large Block Pullout Test (LBPT), the A
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Pozo-Lora, F. F., Benson, Z., Maguire, M., Sorensen, A. D., Haling, M., & Barr, P. J. (2020). Bond Performance of 1.125 Inch Diameter Prestressing Strands (Report No. CAIT-UTC-NC51). Rutgers University. Center for Advanced Infrastructure and Transportation. https://rosap.ntl.bts.gov/view/dot/55533
Pozo-Lora, Fray F, Zachary Benson, Marc Maguire, Andrew D. Sorensen, Marvin Haling, and Paul J. Barr. Bond Performance of 1.125 Inch Diameter Prestressing Strands. Report no. CAIT-UTC-NC51. Rutgers University. Center for Advanced Infrastructure and Transportation, 2020. https://rosap.ntl.bts.gov/view/dot/55533.
Pozo-Lora, Fray F, et al. Bond Performance of 1.125 Inch Diameter Prestressing Strands. Rutgers University. Center for Advanced Infrastructure and Transportation, 2020, Report no. CAIT-UTC-NC51, ROSA P. https://rosap.ntl.bts.gov/view/dot/55533.
Creating and maintaining sustainable transportation systems depends in part on understanding and mitigating ecological impacts. Wildlife crossing structures (WCS) are often used to mitigate impacts on wildlife populations. WCS and existing structures may provide passage for multiple species, depending on their sensitivity to traffic disturbance and
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Shilling, F. M., Collins, A., Longcore, T., & Vickers, W. (2020). Understanding Behavioral Responses of Wildlife to Traffic to Improve Mitigation Planning (Report No. NCST-UCD-RR-20-08). University of California, Davis. Institute of Transportation Studies. https://doi.org/10.7922/G29S1P9Q
Shilling, Fraser M, Amy Collins, Travis Longcore, and Winston Vickers. Understanding Behavioral Responses of Wildlife to Traffic to Improve Mitigation Planning. Report no. NCST-UCD-RR-20-08. University of California, Davis. Institute of Transportation Studies, 2020. https://doi.org/10.7922/G29S1P9Q.
Shilling, Fraser M, et al. Understanding Behavioral Responses of Wildlife to Traffic to Improve Mitigation Planning. University of California, Davis. Institute of Transportation Studies, 2020, Report no. NCST-UCD-RR-20-08, ROSA P. https://doi.org/10.7922/G29S1P9Q.
Transportation projects can affect health through multiple pathways, e.g., by degrading air quality or encouraging active transportation. There is a need to incorporate health considerations in transportation decision making to achieve health-related community goals. The objectives of this research project were to assess the state-of-the-practice o
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Christofa, E., Pollitt, K., Goins, K. V., Lemon, S., Frisard, C., Deliali, A., Esenther, S., & Page, M. (2020). Public Health Assessment for Transportation Projects (Report No. 19-011). Massachusetts. Dept. of Transportation. Office of Transportation Planning. https://rosap.ntl.bts.gov/view/dot/61718
Christofa, Eleni, Krystal Pollitt, Karin Valentine Goins, Stephenie Lemon, Christine Frisard, Aikaterini Deliali, Sarah Esenther, and Mitchell Page. Public Health Assessment for Transportation Projects. Report no. 19-011. Massachusetts. Dept. of Transportation. Office of Transportation Planning, 2020. https://rosap.ntl.bts.gov/view/dot/61718.
Christofa, Eleni, et al. Public Health Assessment for Transportation Projects. Massachusetts. Dept. of Transportation. Office of Transportation Planning, 2020, Report no. 19-011, ROSA P. https://rosap.ntl.bts.gov/view/dot/61718.
The objective of this study was to evaluate the safety impacts of increasing the speed limit from 55 mph to 60 mph on two-lane, two-way state highway road segments in Minnesota. An empirical Bayes (EB) before-after analysis was used to estimate crash modification factors (CMFs) for both segments and intersections. The segment analysis showed a 7 pe
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Saleem, T., Srinivasan, R., Levitt, D., Vann, M., Worzella, A., & Storm, R. (2020). Speed Limit Change (55 Mph to 60 Mph) Safety Evaluation (Report No. MN 2020-06). Minnesota. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/54222
Saleem, Taha, Raghavan Srinivasan, Daniel Levitt, Mike Vann, Amy Worzella, and Richard Storm. Speed Limit Change (55 Mph to 60 Mph) Safety Evaluation. Report no. MN 2020-06. Minnesota. Department of Transportation, 2020. https://rosap.ntl.bts.gov/view/dot/54222.
Saleem, Taha, et al. Speed Limit Change (55 Mph to 60 Mph) Safety Evaluation. Minnesota. Department of Transportation, 2020, Report no. MN 2020-06, ROSA P. https://rosap.ntl.bts.gov/view/dot/54222.
This study predicts how spatial and temporal population changes from the 2010 and 2020 decennial censuses will impact funding for the Federal Transit Administration (FTA) § 5311 rural and FTA § 5307 urban transit programs, both in Georgia and nationwide. Binary logit models and geographic information system (GIS) methods were used to predict which
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Garrow, L. A., Douthat, T., Nord, A., & Douglass, S. (2020). A Statewide Assessment of Public Transit Funding Needs for Counties Trending Urban in Georgia (Report No. FHWA-GA-20-1701). Georgia. Department of Transportation. Office of Performance-Based Management & Research. https://rosap.ntl.bts.gov/view/dot/53915
Garrow, Laurie A., Thomas Douthat, Anna Nord, and Sara Douglass. A Statewide Assessment of Public Transit Funding Needs for Counties Trending Urban in Georgia. Report no. FHWA-GA-20-1701. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020. https://rosap.ntl.bts.gov/view/dot/53915.
Garrow, Laurie A., et al. A Statewide Assessment of Public Transit Funding Needs for Counties Trending Urban in Georgia. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020, Report no. FHWA-GA-20-1701, ROSA P. https://rosap.ntl.bts.gov/view/dot/53915.
This report summarizes the work on the improved calculation of scour potential in cohesive soils and scour-susceptible rock. A state of the practice survey was first conducted to gather information about the scour evaluation in cohesive soils and scour-susceptible rock. This includes a literature review covering the concepts and understanding of sc
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Liu, Z. L., Sheefa, D. E., Vitton, S., & Barkdoll, B. (2020). Improved Calculation of Scour Potential in Cohesive Soils and Scour-susceptible Rock (Report No. SPR-1688). Michigan. Dept. of Transportation. Office of Research Administration. https://rosap.ntl.bts.gov/view/dot/59209
Liu, Zhen Leo, Darud E Sheefa, Stanley Vitton, and Brian Barkdoll. Improved Calculation of Scour Potential in Cohesive Soils and Scour-susceptible Rock. Report no. SPR-1688. Michigan. Dept. of Transportation. Office of Research Administration, 2020. https://rosap.ntl.bts.gov/view/dot/59209.
Liu, Zhen Leo, et al. Improved Calculation of Scour Potential in Cohesive Soils and Scour-susceptible Rock. Michigan. Dept. of Transportation. Office of Research Administration, 2020, Report no. SPR-1688, ROSA P. https://rosap.ntl.bts.gov/view/dot/59209.
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