This report provides recommendations for integrating both nondestructive evaluation (NDE) data and field data from structural health monitoring (SHM) to obtain load ratings that reliably represent a bridge's load-carrying performance. Modern NDE techniques, which provide accurate location and characterization of deteriorations, enable more reliable
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Moon, F., Braley, J., & Gucunski, N. (2021). Improved Infrastructure Assessment through the Integration of Nondestructive Evaluation and Structural Health Monitoring Paradigms (Report No. FHWA-HRT-21-011). United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development. https://rosap.ntl.bts.gov/view/dot/54586
Moon, Franklin, John Braley, and Nenad Gucunski. Improved Infrastructure Assessment through the Integration of Nondestructive Evaluation and Structural Health Monitoring Paradigms. Report no. FHWA-HRT-21-011. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/54586.
Moon, Franklin, et al. Improved Infrastructure Assessment through the Integration of Nondestructive Evaluation and Structural Health Monitoring Paradigms. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2021, Report no. FHWA-HRT-21-011, ROSA P. https://rosap.ntl.bts.gov/view/dot/54586.
This report presents a Safe System for Intersections (SSI) method that intersection planners and designers can readily implement, that dovetails with the typical U.S. project development process, and that uses commonly available project-level data. The SSI method is presented in the context of a Stage 1 Intersection Control Evaluation (ICE), at the
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Porter, R., Dunn, M., Soika, J., Huang, I., Coley, D., Gross, A., Kumfer, W., & Heiny, S. (2021). A Safe System-Based Framework and Analytical Methodology for Assessing Intersections (Report No. FHWA-SA-21-008). United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/58029
Porter, R.J., Michael Dunn, Jonathan Soika, Ivy Huang, Dylan Coley, Annette Gross, Wesley Kumfer, and Stephen Heiny. A Safe System-Based Framework and Analytical Methodology for Assessing Intersections. Report no. FHWA-SA-21-008. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/58029.
Porter, R.J., et al. A Safe System-Based Framework and Analytical Methodology for Assessing Intersections. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, Report no. FHWA-SA-21-008, ROSA P. https://rosap.ntl.bts.gov/view/dot/58029.
The preferred design for conventional intersections includes adjacent legs that intersect at 90 degrees. However, there are occasions when physical constraints result in intersection angles less than 90 degrees and thus produce skewed intersections. Skewed intersections may create potential safety and operational problems for both motorists and non
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Harkey, D. L., Lan, B., Srinivasan, R., Kumfer, W., Carter, D., & Nujjetty, A. p. (2021). Impact of Intersection Angle on Highway Safety (Report No. FHWA-HRT-20-067). United States. Federal Highway Administration. Office of Safety Research and Development. https://rosap.ntl.bts.gov/view/dot/54782
Harkey, David L., Bo Lan, Raghavan Srinivasan, Wesley Kumfer, Daniel Carter, and Anusha patel Nujjetty. Impact of Intersection Angle on Highway Safety. Report no. FHWA-HRT-20-067. United States. Federal Highway Administration. Office of Safety Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/54782.
Harkey, David L., et al. Impact of Intersection Angle on Highway Safety. United States. Federal Highway Administration. Office of Safety Research and Development, 2021, Report no. FHWA-HRT-20-067, ROSA P. https://rosap.ntl.bts.gov/view/dot/54782.
United States. Department of Transportation. Federal Highway Administration
2021-01-01
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The FHWA has identified and is promoting widespread use of a set of 28 Proven Safety Countermeasures that can offer significant, measurable impacts as part of any agency’s data-driven, systemic approach to improving safety. These strategies are designed to enhance safety on all kinds of roads—from rural to urban, from high-volume freeways to less t
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United States. Department of Transportation. Federal Highway Administration (2021). Making Our Roads Safer One Countermeasure at a Time [2021] (Report No. FHWA-SA-21-082). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/88185
United States. Department of Transportation. Federal Highway Administration. Making Our Roads Safer One Countermeasure at a Time [2021]. Report no. FHWA-SA-21-082. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/88185.
United States. Department of Transportation. Federal Highway Administration Making Our Roads Safer One Countermeasure at a Time [2021]. United States. Department of Transportation. Federal Highway Administration, 2021, Report no. FHWA-SA-21-082, ROSA P. https://rosap.ntl.bts.gov/view/dot/88185.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-01-01
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Highway Statistics Series: State Statistical Abstracts
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The data in these State by State Abstracts contain State-submitted data to FHWA on: motor fuel use, driver licensing, vehicle registration, State and local financing, land area, population, and vehicle miles of travel.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Highway Statistics Series: State Statistical Abstracts [Utah 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/74070
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Highway Statistics Series: State Statistical Abstracts [Utah 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/74070.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Highway Statistics Series: State Statistical Abstracts [Utah 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/74070.
This document describes the System Requirements Specification (SyRS) for the Tampa Hillsborough Expressway Authority (THEA) Connected Vehicle (CV) Pilot Deployment. This SyRS was updated to reflect the requirements implemented in Phase 3 and describes the current system requirements derived from the user needs, Concept of Operations, Security Manag
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Novosad, S., Johnson, S., Blue, V. J., Concas, S., Miller, D., Waggoner, J., & Frey, B. (2021). Connected Vehicle Pilot Deployment Program Phase 3, System Requirements Specification (SyRS) – Tampa (THEA) (Report No. FHWA-JPO-16-315). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/54713
Novosad, Stephen, Steve Johnson, Victor J. Blue, Sisinnio Concas, David Miller, Joe Waggoner, and Bob Frey. Connected Vehicle Pilot Deployment Program Phase 3, System Requirements Specification (SyRS) – Tampa (THEA). Report no. FHWA-JPO-16-315. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/54713.
Novosad, Stephen, et al. Connected Vehicle Pilot Deployment Program Phase 3, System Requirements Specification (SyRS) – Tampa (THEA). United States. Department of Transportation. Federal Highway Administration, 2021, Report no. FHWA-JPO-16-315, ROSA P. https://rosap.ntl.bts.gov/view/dot/54713.
The Federal Highway Administration (FHWA) partnered with eleven pilot project teams to assess and deploy resilience solutions. This case study is part of a series that summarizes the pilot projects and highlights transportation system resilience efforts at other agencies across the country. For more information, visit https://www.fhwa.dot.gov/envir
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United States. Federal Highway Administration (2021). Resilience and Durability to Extreme Weather Pilot Project: Pennsylvania Department of Transportation (Report No. FHWA-HEP-21-031). United States. Federal Highway Administration. Office of Planning, Environment, and Realty. https://rosap.ntl.bts.gov/view/dot/58567
United States. Federal Highway Administration. Resilience and Durability to Extreme Weather Pilot Project: Pennsylvania Department of Transportation. Report no. FHWA-HEP-21-031. United States. Federal Highway Administration. Office of Planning, Environment, and Realty, 2021. https://rosap.ntl.bts.gov/view/dot/58567.
United States. Federal Highway Administration Resilience and Durability to Extreme Weather Pilot Project: Pennsylvania Department of Transportation. United States. Federal Highway Administration. Office of Planning, Environment, and Realty, 2021, Report no. FHWA-HEP-21-031, ROSA P. https://rosap.ntl.bts.gov/view/dot/58567.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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Reduced left-turn conflict intersections are geometric designs that alter how left-turn movements occur. These intersections simplify decision-making for drivers and minimize the potential for higher severity crash types, such as head-on and angle. Two highly effective designs that rely on U-turns to complete certain left-turn movements are known a
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United States. Department of Transportation. Federal Highway Administration. Office of Safety (2021). Proven Safety Countermeasures: Reduced Left-Turn Conflict Intersections (Report No. FHWA-SA-21-030). United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/66808
United States. Department of Transportation. Federal Highway Administration. Office of Safety. Proven Safety Countermeasures: Reduced Left-Turn Conflict Intersections. Report no. FHWA-SA-21-030. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/66808.
United States. Department of Transportation. Federal Highway Administration. Office of Safety Proven Safety Countermeasures: Reduced Left-Turn Conflict Intersections. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, Report no. FHWA-SA-21-030, ROSA P. https://rosap.ntl.bts.gov/view/dot/66808.
United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office
2021-01-01
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Electronic fare payment (EFP) has long been used in the transit industry to facilitate fare collection. These systems, representing an advancement from mechanical or operator-based cash-only systems, can eliminate the need for travelers to have exact change when taking transit. They can also reduce operational costs for agencies, as cash is expensi
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United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (2021). ITS Deployment Evaluation Executive Briefing: Advancements in Electronic Fare Payment Contactless and Open Loop Technologies. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office. https://rosap.ntl.bts.gov/view/dot/65707
United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office. ITS Deployment Evaluation Executive Briefing: Advancements in Electronic Fare Payment Contactless and Open Loop Technologies. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2021. https://rosap.ntl.bts.gov/view/dot/65707.
United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office ITS Deployment Evaluation Executive Briefing: Advancements in Electronic Fare Payment Contactless and Open Loop Technologies. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/65707.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-01-01
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Highway Statistics Series: State Statistical Abstracts
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The data in these State by State Abstracts contain State-submitted data to FHWA on: motor fuel use, driver licensing, vehicle registration, State and local financing, land area, population, and vehicle miles of travel.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Highway Statistics Series: State Statistical Abstracts [Arizona 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/73825
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Highway Statistics Series: State Statistical Abstracts [Arizona 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/73825.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Highway Statistics Series: State Statistical Abstracts [Arizona 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/73825.
The Federal Highway Administration (FHWA) partnered with eleven pilot project teams to assess and deploy resilience solutions. This case study is part of a series that summarizes the pilot projects and highlights transportation system resilience efforts at other agencies across the country. For more information, visit https://www.fhwa.dot.gov/envir
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United States. Federal Highway Administration (2021). Resilience and Durability to Extreme Weather Pilot Project: Massachusetts Department of Transportation (Report No. FHWA-HEP-21-030). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58166
United States. Federal Highway Administration. Resilience and Durability to Extreme Weather Pilot Project: Massachusetts Department of Transportation. Report no. FHWA-HEP-21-030. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/58166.
United States. Federal Highway Administration Resilience and Durability to Extreme Weather Pilot Project: Massachusetts Department of Transportation. United States. Federal Highway Administration, 2021, Report no. FHWA-HEP-21-030, ROSA P. https://rosap.ntl.bts.gov/view/dot/58166.
United States. Department of Transportation. Federal Highway Administration
2021-01-01
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The Nevada Highway Safety Improvement Program (HSIP) report for 2021 summarizes the activities of the Nevada Department of Transportation’s HSIP as required by Fixing America’s Surface Transportation (FAST) Act. The FAST Act continues the HSIP to achieve a significant reduction in traffic fatalities and serious injuries on all public roads, includi
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United States. Department of Transportation. Federal Highway Administration (2021). Nevada: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/83126
United States. Department of Transportation. Federal Highway Administration. Nevada: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/83126.
United States. Department of Transportation. Federal Highway Administration Nevada: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/83126.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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The modern roundabout is an intersection with a circular configuration that safely and efficiently moves traffic. Roundabouts feature channelized, curved approaches that reduce vehicle speed, entry yield control that gives right-of-way to circulating traffic, and counterclockwise flow around a central island that minimizes conflict points. The net
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United States. Department of Transportation. Federal Highway Administration. Office of Safety (2021). Proven Safety Countermeasures: Roundabouts (Report No. FHWA-SA-21-042). United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/66809
United States. Department of Transportation. Federal Highway Administration. Office of Safety. Proven Safety Countermeasures: Roundabouts. Report no. FHWA-SA-21-042. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/66809.
United States. Department of Transportation. Federal Highway Administration. Office of Safety Proven Safety Countermeasures: Roundabouts. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, Report no. FHWA-SA-21-042, ROSA P. https://rosap.ntl.bts.gov/view/dot/66809.
United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment
2021-01-01
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The U.S. Department of Transportation’s (USDOT) Health in Transportation (HinT) Working Group examines and promotes the Department’s existing policies and programs to assist modal agencies address health-related topics that are raised by staff, project sponsors, and the public. The Working Group covers topics such as safety, equity, accessibility,
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United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment (2021). Health in Transportation Working Group 2020 Annual Report. United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment. https://rosap.ntl.bts.gov/view/dot/72937
United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment. Health in Transportation Working Group 2020 Annual Report. United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment, 2021. https://rosap.ntl.bts.gov/view/dot/72937.
United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment Health in Transportation Working Group 2020 Annual Report. United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/72937.
HFST is a safety countermeasure intended to restore and maintain pavement friction in wet and dry conditions to reduce crashes. This treatment is especially effective where there is a history of wet-pavement crashes. In Pennsylvania, over 50% of the fatal and serious injury crashes involve a lane departure, and intersection crashes account for 21%
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United States. Federal Highway Administration (2021). Noteworthy Practices: HFST Institutionalized at PennDOT (Report No. FHWA-SA-21-127). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/62988
United States. Federal Highway Administration. Noteworthy Practices: HFST Institutionalized at PennDOT. Report no. FHWA-SA-21-127. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/62988.
United States. Federal Highway Administration Noteworthy Practices: HFST Institutionalized at PennDOT. United States. Federal Highway Administration, 2021, Report no. FHWA-SA-21-127, ROSA P. https://rosap.ntl.bts.gov/view/dot/62988.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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Median barriers are longitudinal barriers that separate opposing traffic on a divided highway and are designed to redirect vehicles striking either side of the barrier. Median barriers significantly reduce the number of cross-median crashes, which are attributed to the relatively high speeds that are typical on divided highways. AASHTO’s Roadside D
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United States. Department of Transportation. Federal Highway Administration. Office of Safety (2021). Proven Safety Countermeasures: Median Barriers (Report No. FHWA-SA-21-037). United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/66698
United States. Department of Transportation. Federal Highway Administration. Office of Safety. Proven Safety Countermeasures: Median Barriers. Report no. FHWA-SA-21-037. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/66698.
United States. Department of Transportation. Federal Highway Administration. Office of Safety Proven Safety Countermeasures: Median Barriers. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, Report no. FHWA-SA-21-037, ROSA P. https://rosap.ntl.bts.gov/view/dot/66698.
United States. Department of Transportation. Federal Highway Administration
2021-01-01
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The Montana Department of Transportation continues to successfully implement Highway Safety Improvement Program (HSIP) Funds throughout the State. This past year, funds have been utilized on state, county, city and local roadways. This includes large systemic applications (curve signing, sinusodial centerline rumble strips, median cable barrier) as
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United States. Department of Transportation. Federal Highway Administration (2021). Montana: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/82721
United States. Department of Transportation. Federal Highway Administration. Montana: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/82721.
United States. Department of Transportation. Federal Highway Administration Montana: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/82721.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-01-01
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Highway Statistics Series: State Statistical Abstracts
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PDF
The data in these State by State Abstracts contain State-submitted data to FHWA on: motor fuel use, driver licensing, vehicle registration, State and local financing, land area, population, and vehicle miles of travel.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Highway Statistics Series: State Statistical Abstracts [Michigan 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/74045
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Highway Statistics Series: State Statistical Abstracts [Michigan 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/74045.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Highway Statistics Series: State Statistical Abstracts [Michigan 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/74045.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-01-01
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Highway Statistics Series: State Statistical Abstracts
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PDF
The data in these State by State Abstracts contain State-submitted data to FHWA on: motor fuel use, driver licensing, vehicle registration, State and local financing, land area, population, and vehicle miles of travel.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Highway Statistics Series: State Statistical Abstracts [North Dakota 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/74057
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Highway Statistics Series: State Statistical Abstracts [North Dakota 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/74057.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Highway Statistics Series: State Statistical Abstracts [North Dakota 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/74057.
United States. Department of Transportation. Federal Highway Administration
2021-01-01
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Summary Maryland Highway Safety Improvement Program (HSIP) CY 2020. The purpose of the HSIP is to achieve a significant reduction in traffic fatalities and serious injuries on public roads. To obligate “core” safety funds MDOT SHA must have in effect an HSIP under which the State: 1) develops and implements a Strategic Highway Safety Plan (SHSP) th
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United States. Department of Transportation. Federal Highway Administration (2021). Maryland: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/82715
United States. Department of Transportation. Federal Highway Administration. Maryland: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/82715.
United States. Department of Transportation. Federal Highway Administration Maryland: Highway Safety Improvement Program 2021 Annual Report. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/82715.
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