United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-12
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The Weekly Traffic Volume Report estimates the vehicle miles traveled (VMT) for interstate highways and how the total travel measured by VMT compares with travel that occurred in the same week of the previous year. The VMT is further split into passenger vehicle and truck components. The information gives new insights into the effect on traffic by
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 36, 9/6/2021 - 9/12/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/57591
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 36, 9/6/2021 - 9/12/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/57591.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 36, 9/6/2021 - 9/12/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/57591.
This report documents an independent evaluation of annual average daily traffic (AADT) estimates developed from traffic probes by StreetLight Data, Inc (StL). The Texas A&M Transportation Institute (TTI) researchers performed a systematic process to identify accurate permanent continuous counter sites maintained by public agencies and private entit
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Tsapakis, I., Turner, S., Koeneman, P., & Anderson, P. R. (2021). Independent Evaluation of a Probe-Based Method to Estimate Annual Average Daily Traffic Volume (Report No. FHWA-PL-21-032). United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/64899
Tsapakis, Ioannis, Shawn Turner, Pete Koeneman, and Paul R. Anderson. Independent Evaluation of a Probe-Based Method to Estimate Annual Average Daily Traffic Volume. Report no. FHWA-PL-21-032. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/64899.
Tsapakis, Ioannis, et al. Independent Evaluation of a Probe-Based Method to Estimate Annual Average Daily Traffic Volume. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, Report no. FHWA-PL-21-032, ROSA P. https://rosap.ntl.bts.gov/view/dot/64899.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-10
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The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 50, Data Complete Through 9/10/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/57587
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 50, Data Complete Through 9/10/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/57587.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 50, Data Complete Through 9/10/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/57587.
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2021-09-07
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ZIP
The Federal Highway Administration (FHWA) developed the innovative CARMASM Platform to encourage collaboration with the goal of improving transportation efficiency and safety. FHWA's interest in advancing Transportation Systems Management and Operations (TSMO) strategies with automated driving technology is focused on how infrastructure can move tr
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology (2021). CARMA Platform Version 3.7.1 [supporting software]. United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology. https://rosap.ntl.bts.gov/view/dot/89095
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology. CARMA Platform Version 3.7.1 [supporting software]. United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, 2021. https://rosap.ntl.bts.gov/view/dot/89095.
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology CARMA Platform Version 3.7.1 [supporting software]. United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/89095.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-05
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PDF
The Weekly Traffic Volume Report estimates the vehicle miles traveled (VMT) for interstate highways and how the total travel measured by VMT compares with travel that occurred in the same week of the previous year. The VMT is further split into passenger vehicle and truck components. The information gives new insights into the effect on traffic by
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 35, 8/30/2021 - 9/5/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/57590
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 35, 8/30/2021 - 9/5/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/57590.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 35, 8/30/2021 - 9/5/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/57590.
United States. Department of Transportation. Federal Highway Administration
2021-09-05
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To address the nation's shortage of highway construction workers, the U.S. Department of Transportation's Federal Highway Administration (FHWA) established the Highway Construction Workforce Partnership (HCWP). In locations like Denver, Los Angeles, and Rhode Island, working groups formed to identify, train, and place qualified individuals into ski
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United States. Department of Transportation. Federal Highway Administration (2021). Highway Construction Workforce Partnership: Strategic Workforce Development: Providing Support to Launch Lasting Careers in Highway Construction. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/89782
United States. Department of Transportation. Federal Highway Administration. Highway Construction Workforce Partnership: Strategic Workforce Development: Providing Support to Launch Lasting Careers in Highway Construction. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/89782.
United States. Department of Transportation. Federal Highway Administration Highway Construction Workforce Partnership: Strategic Workforce Development: Providing Support to Launch Lasting Careers in Highway Construction. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/89782.
United States. Department of Transportation. Federal Highway Administration
2021-09-04
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PDF
In-place density of asphalt pavement mats and joints is an important factor in building cost-effective, long-lasting asphalt pavements. Recognizing the importance of in-place density, the FHWA recently completed a demonstration project for "Enhanced Durability of Asphalt Pavements through Increased In-place Pavement Density" to assist State Departm
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United States. Department of Transportation. Federal Highway Administration (2021). Enhanced In-Place Density: Demonstration Projects. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77870
United States. Department of Transportation. Federal Highway Administration. Enhanced In-Place Density: Demonstration Projects. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/77870.
United States. Department of Transportation. Federal Highway Administration Enhanced In-Place Density: Demonstration Projects. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/77870.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-03
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PDF
The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 49, Data Complete Through 9/3/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/57586
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 49, Data Complete Through 9/3/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/57586.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 49, Data Complete Through 9/3/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/57586.
This report represents a technology supplement to the 2014 Work Zone Intelligent Transportation Systems (WZITS) Implementation Guide (Report No. FHWA-HOP-14-008). The Guide forms the foundational framework, concepts, and methods for establishing a WZITS program. The Guide further introduces various Intelligent Transportation Systems (ITS) technolog
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Schroeder, B., Warchol, S., Laffey, S., Grosso, R., Rowe, G., Pate, A., Boyapati, R. K., & Sanchez-Badillo, A. (2021). Work Zone Intelligent Transportation Systems - Technology Supplement (Report No. FHWA-HOP-21-021). United States. Federal Highway Administration. Office of Operations Research and Development. https://rosap.ntl.bts.gov/view/dot/66606
Schroeder, Bastian, Shannon Warchol, Sean Laffey, Rachel Grosso, Glenn Rowe, Alan Pate, Rama Krishna Boyapati, and Alejandro Sanchez-Badillo. Work Zone Intelligent Transportation Systems - Technology Supplement. Report no. FHWA-HOP-21-021. United States. Federal Highway Administration. Office of Operations Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/66606.
Schroeder, Bastian, et al. Work Zone Intelligent Transportation Systems - Technology Supplement. United States. Federal Highway Administration. Office of Operations Research and Development, 2021, Report no. FHWA-HOP-21-021, ROSA P. https://rosap.ntl.bts.gov/view/dot/66606.
Safe, accessible, and efficient transportation is a prerequisite for health and prosperity. In comparison to the nation’s urban areas, rural communities face unique challenges in providing transportation that effectively serves their residents. The purpose of this study is to identify and address unmet safety and mobility needs in rural areas. To i
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Stephens, M., Emil, E., Blair, A., Middleton, S., Schroeckenthaler, K., Pildes, R., Goldberg, J., Bruno, C., Piercy, B., Villwock-Witte, N., Clouser, K., Sullivan, J., Kack, D., & Little, C. (2021). Emerging Technologies and Opportunities for Improved Mobility and Safety for Rural Areas (Report No. FHWA-PL-022-004). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/63185
Stephens, Mia, Elise Emil, Adam Blair, Scott Middleton, Kyle Schroeckenthaler, Russell Pildes, and Jenna Goldberg, et al.. Emerging Technologies and Opportunities for Improved Mobility and Safety for Rural Areas. Report no. FHWA-PL-022-004. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/63185.
Stephens, Mia, et al. Emerging Technologies and Opportunities for Improved Mobility and Safety for Rural Areas. United States. Federal Highway Administration, 2021, Report no. FHWA-PL-022-004, ROSA P. https://rosap.ntl.bts.gov/view/dot/63185.
Since 1981, the Michigan Department of Transportation (MDOT) has worked with the Federal Highway Administration to complete the US 31 freeway connection between I-80/90 in northern Indiana to I-94 in Berrien County, Michigan. The latest construction on the US 31 freeway ended in 2003 with a terminal interchange at Napier Avenue in Berrien County. T
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Hamilton, I., & Zhou, Y. (2021). Michigan's US 31 at I-94 Interchange Alternatives Analysis (Report No. FHWA-SA-21-020). United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/63016
Hamilton, Ian and Yuying Zhou. Michigan's US 31 at I-94 Interchange Alternatives Analysis. Report no. FHWA-SA-21-020. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/63016.
Hamilton, Ian, and Yuying Zhou Michigan's US 31 at I-94 Interchange Alternatives Analysis. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, Report no. FHWA-SA-21-020, ROSA P. https://rosap.ntl.bts.gov/view/dot/63016.
This Technical Brief summarizes techniques employed by State DOTs in the use of high doses of reclaimed asphalt pavement (RAP) in asphalt mixtures and communicates the benefits observed.
Hand, A. J. T., & Aschenbrener, T. (2021). Resource Responsible Use of Reclaimed Asphalt Pavement in Asphalt Mixtures [tech brief] (Report No. FHWA-HIF-22-003). United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. https://rosap.ntl.bts.gov/view/dot/59939
Hand, Adam J. T. and T. Aschenbrener. Resource Responsible Use of Reclaimed Asphalt Pavement in Asphalt Mixtures [tech brief]. Report no. FHWA-HIF-22-003. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2021. https://rosap.ntl.bts.gov/view/dot/59939.
Hand, Adam J. T., and T. Aschenbrener Resource Responsible Use of Reclaimed Asphalt Pavement in Asphalt Mixtures [tech brief]. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2021, Report no. FHWA-HIF-22-003, ROSA P. https://rosap.ntl.bts.gov/view/dot/59939.
Traffic Optimization for Signalized Corridors (TOSCo) is an innovative connected and automated vehicle application that has the potential to generate substantial mobility and air quality benefits for public agencies and potential fuel savings benefits for the traveling public. Under the TOSCo system, vehicles equipped with TOSCo functionality use s
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Huang, Z., Ma, J., Guo, Y., Matout, N., Feng, Y., Florence, D., Balke, K., LeBlanc, D., Wu, G., Adla, R., Guenther, H. J., Hussain, S., Moradi-Pari, E., Naes, T., Probert, N., Kumar, V., Williams, R., Yoshida, H., Yumak, T., ... Goudy, R. (2021). Developing Analysis, Modeling, and Simulation Tools for Connected Automated Vehicle Applications: Traffic Optimization for Signalized Corridors–Case Studies in Ann Arbor, MI, and Conroe, TX (Report No. FHWA-HRT-21-085). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58023
Huang, Zhitong, Jiaqi Ma, Yi Guo, Nagham Matout, Yiheng Feng, David Florence, and Kevin Balke, et al.. Developing Analysis, Modeling, and Simulation Tools for Connected Automated Vehicle Applications: Traffic Optimization for Signalized Corridors–Case Studies in Ann Arbor, MI, and Conroe, TX. Report no. FHWA-HRT-21-085. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/58023.
Huang, Zhitong, et al. Developing Analysis, Modeling, and Simulation Tools for Connected Automated Vehicle Applications: Traffic Optimization for Signalized Corridors–Case Studies in Ann Arbor, MI, and Conroe, TX. United States. Federal Highway Administration, 2021, Report no. FHWA-HRT-21-085, ROSA P. https://rosap.ntl.bts.gov/view/dot/58023.
Federal regulations in 23 CFR part 630 subpart J require State highway agencies to conduct a Work Zone Process Review (WZPR) every 2 years to evaluate work zone processes and procedures, as well as identify systematic improvements to current and future projects. The Federal Highway Administration now encourages agencies to use a data-driven approac
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Sankar, P., Boyapati, R. K., & Pate, A. (2021). Data-Driven Work Zone Process Reviews Case Study: Iowa Department of Transportation (Report No. FHWA-HOP-21-052). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/66533
Sankar, Param, Rama Krishna Boyapati, and Alan Pate. Data-Driven Work Zone Process Reviews Case Study: Iowa Department of Transportation. Report no. FHWA-HOP-21-052. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/66533.
Sankar, Param, et al. Data-Driven Work Zone Process Reviews Case Study: Iowa Department of Transportation. United States. Federal Highway Administration, 2021, Report no. FHWA-HOP-21-052, ROSA P. https://rosap.ntl.bts.gov/view/dot/66533.
This project’s ultimate deliverable is a functional Vulnerable User Density Dashboard (https://mti.umd.edu/sdi) for the state of Maryland. The dashboard uses mobile device location data and electric scooter volume data to reflect pedestrian, bicycle, and electric scooter travel volumes and their exposure to roadway safety risk across all roadways i
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DatasetSupporting Files
Xiong, C., Mahmoudi, J., Luo, W., Yang, M., Zheng, J., & Delion, C. (2021). A Data-Driven Safety Dashboard Assessing Maryland Statewide Density Exposure of Pedestrians, Bicycles, and E-Scooters [supporting datasets]. Maryland Department of Transportation. State Highway Administration. https://rosap.ntl.bts.gov/view/dot/61320
Xiong, Chenfeng, Jina Mahmoudi, Weiyu Luo, Mofeng Yang, Jianyang Zheng, and Carole Delion. A Data-Driven Safety Dashboard Assessing Maryland Statewide Density Exposure of Pedestrians, Bicycles, and E-Scooters [supporting datasets]. Maryland Department of Transportation. State Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/61320.
Xiong, Chenfeng, et al. A Data-Driven Safety Dashboard Assessing Maryland Statewide Density Exposure of Pedestrians, Bicycles, and E-Scooters [supporting datasets]. Maryland Department of Transportation. State Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/61320.
This report documents research undertaken to explore the use of unmanned aerial systems (UAS) to support bridge inspection. It addresses UAS platforms and sensors used to assist or augment inspections, the data-collection needs that UAS can meet, and means and methods for managing the tremendous amount of data that can be collected by UAS-mounted s
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Neubauer, K., Bullard, E., & Blunt, R. (2021). Collection of Data with Unmanned Aerial Systems (UAS) for Bridge Inspection and Construction Inspection (Report No. FHWA-HRT-21-086). United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development. https://rosap.ntl.bts.gov/view/dot/57597
Neubauer, Kenneth, Erik Bullard, and Robert Blunt. Collection of Data with Unmanned Aerial Systems (UAS) for Bridge Inspection and Construction Inspection. Report no. FHWA-HRT-21-086. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/57597.
Neubauer, Kenneth, et al. Collection of Data with Unmanned Aerial Systems (UAS) for Bridge Inspection and Construction Inspection. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2021, Report no. FHWA-HRT-21-086, ROSA P. https://rosap.ntl.bts.gov/view/dot/57597.
United States. Department of Transportation. Federal Highway Administration. Office of Operations
2021-09-01
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Urban Congestion Report (UCR)
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The Urban Congestion Report (UCR) is produced on a quarterly basis and characterizes the most recent traffic congestion and reliability trends at the national and city level. Each quarterly UCR compares data from the most recent three months to the same three months in the previous year.
United States. Department of Transportation. Federal Highway Administration. Office of Operations (2021). Urban Congestion Report (UCR): Year-to-Year Trends in the U.S. for July through September 2021. United States. Department of Transportation. Federal Highway Administration. Office of Operations. https://rosap.ntl.bts.gov/view/dot/87751
United States. Department of Transportation. Federal Highway Administration. Office of Operations. Urban Congestion Report (UCR): Year-to-Year Trends in the U.S. for July through September 2021. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2021. https://rosap.ntl.bts.gov/view/dot/87751.
United States. Department of Transportation. Federal Highway Administration. Office of Operations Urban Congestion Report (UCR): Year-to-Year Trends in the U.S. for July through September 2021. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/87751.
The Federal Highway Administration's Long-Term Pavement Performance (LTPP) program issues a triannual newsletter to inform you about the progress and activities of the program. Brief updates on progress in important program activities are provided, including data collection, data releases, new products and publications, pooled fund studies, and dat
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Long-Term Pavement Performance Program (U.S.) (2021). LTPP Newsletter - Summer Issue - September 2021 (Report No. FHWA-HRT-21-099). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58306
Long-Term Pavement Performance Program (U.S.). LTPP Newsletter - Summer Issue - September 2021. Report no. FHWA-HRT-21-099. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/58306.
Long-Term Pavement Performance Program (U.S.) LTPP Newsletter - Summer Issue - September 2021. United States. Federal Highway Administration, 2021, Report no. FHWA-HRT-21-099, ROSA P. https://rosap.ntl.bts.gov/view/dot/58306.
For this validation study, NREL compiled traffic volume data from permanent traffic counters at over 500 locations across the U.S. These data were used to validate annual average daily traffic (AADT) estimates developed by Streetlight Data using passive data sources. The analysis revealed a strong correlation between estimates derived from passive
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Fish, J. K., Young, S. E., Wilson, A., & Borlaug, B. (2021). Validation of Non-Traditional Approaches to Annual Average Daily Traffic (AADT) Volume Estimation (Report No. FHWA-PL-21-033). United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/64900
Fish, Joseph K., Stanley E. Young, Alana Wilson, and Brennan Borlaug. Validation of Non-Traditional Approaches to Annual Average Daily Traffic (AADT) Volume Estimation. Report no. FHWA-PL-21-033. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/64900.
Fish, Joseph K., et al. Validation of Non-Traditional Approaches to Annual Average Daily Traffic (AADT) Volume Estimation. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, Report no. FHWA-PL-21-033, ROSA P. https://rosap.ntl.bts.gov/view/dot/64900.
This report explains how to evaluate steel bridge details for susceptibility to constraint-induced fracture. The report begins with a review of fundamental principles of ductile behavior of steel structures and the effects of constraint and stress triaxiality. A brief history of constraint-induced fractures of steel bridges in the United States and
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Coletti, D., Chavel, B. W., Ream, A., Bennett, C., Connor, R., Frank, K., Grubb, M. A., Hubbard, F., Medlock, R., Miller, D., & Russo, F. (2021). Evaluation of Steel Bridge Details for Susceptibility to Constraint-Induced Fracture (Report No. FHWA-HIF-21-046). United States. Federal Highway Administration. Office of Bridges and Structures. https://rosap.ntl.bts.gov/view/dot/59162
Coletti, Domenic, Brandon W. Chavel, Anthony Ream, Caroline Bennett, Robert Connor, Karl Frank, and Michael A. Grubb, et al.. Evaluation of Steel Bridge Details for Susceptibility to Constraint-Induced Fracture. Report no. FHWA-HIF-21-046. United States. Federal Highway Administration. Office of Bridges and Structures, 2021. https://rosap.ntl.bts.gov/view/dot/59162.
Coletti, Domenic, et al. Evaluation of Steel Bridge Details for Susceptibility to Constraint-Induced Fracture. United States. Federal Highway Administration. Office of Bridges and Structures, 2021, Report no. FHWA-HIF-21-046, ROSA P. https://rosap.ntl.bts.gov/view/dot/59162.
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