United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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Reduced left-turn conflict intersections are geometric designs that alter how left-turn movements occur in order to simplify decisions and minimize the potential for related crashes. Two highly effective designs that rely on U-turns to complete certain left-turn movements are known as the restricted crossing U-turn (RCUT) and the median U-turn (MUT
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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PDF
A Road Diet typically involves converting an existing four-lane undivided roadway to a three-lane roadway consisting of two through lanes and a center two-way left-turn lane (TWLTL).
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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PDF
A walkway is any type of defined space or pathway for use by a person traveling by foot or using a wheelchair. These may be pedestrian walkways, shared use paths, sidewalks, or roadway shoulders.
Like a typical commuter building buffer time into daily travel to account for congestion and ensure on-time arrival, a similar buffer is often planned for goods shipped by truck over the highway. Unlike the individual commuting to an office, however, the freight carrier incurs labor, fuel, equipment and lost productivity costs when a shipment is st
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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PDF
A median is the area between opposing lanes of traffic, excluding turn lanes. Medians in urban and suburban areas can be defined by pavement markings, raised medians, or islands to separate motorized and non-motorized road users.
The introduction of new technology generally brings new challenges and new methods to help with deployments. Agile methodologies have been introduced in the information technology industry to potentially speed up development. The Federal Highway Administration (FHWA) developed this document to help those interested in learning about Scrum Methods,
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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PDF
Auxiliary turn lanes—either for left turns or right turns—provide physical separation between turning traffic that is slowing or stopped and adjacent through traffic at approaches to intersections. Turn lanes can be designed to provide for deceleration prior to a turn, as well as for storage of vehicles that are stopped and waiting for the opportun
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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PDF
This systemic approach to intersection safety involves deploying a group of multiple low-cost countermeasures, such as enhanced signing and pavement markings, at a large number of stopcontrolled intersections within a jurisdiction. It is designed to increase driver awareness and recognition of the intersections and potential conflicts.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2017-08-01
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Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste
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United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development
2017-08-01
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The Office of Infrastructure Research and Development (R&D) conducts and administers infrastructure R&D programs and projects for the Federal Highway Administration (FHWA) that address problems of national priority within the U.S. highway system. This work directly supports the goals and mission of the U.S. Department of Transportation and the FHWA
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Representing more than 1.4 million jobs and nearly $130 billion in regional domestic product, freight-related industries represent a significant portion of Washington State's economy. The Washington State Department of Transportation (WSDOT) understands that freight plays a significant role in the health of the State's environment as well. WSDOT pl
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The Development of Crash Modification Factors program conducted the safety evaluation of cable median barriers in combination with rumble strips on the inside shoulder of divided roads for the Evaluation of Low Cost Safety Improvements Pooled Fund Study. This study evaluated safety effectiveness of cable median barriers in combination with rumble s
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When the Delaware Valley Regional Planning Commission (DVRPC) launched the PhillyFreightFinder application in 2013, it established a structured program to collect and integrate freight-related data into a single location. The launch of PhillyFreightFinder represented the first step in DVRPC’s undertaking to develop a centralized data clearinghouse
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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PDF
Longitudinal rumble strips are milled or raised elements on the pavement intended to alert drivers through vibration and sound that their vehicles have left the travel lane. They can be installed on the shoulder, edge line of the travel lane, or at or near center line of an undivided roadway. Rumble stripes are edge line or center line rumble strip
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A challenge with collecting and using freight shipment data is the proprietary nature of the freight industry. Freight stakeholders, such as shippers and carriers, keep the details of their shipments proprietary to maintain a competitive edge in an industry with extremely slim margins. As such, little research has been completed to understand the c
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Learning in Progress, NHI's quarterly newsletter, provides updates on new course launches, upcoming Web conference seminars, training programs and events, and NHI policy changes.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-08-01
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PDF
A leading pedestrian interval (LPI) gives pedestrians the opportunity to enter an intersection 3-7 seconds before vehicles are given a green indication. With this head start, pedestrians can better establish their presence in the crosswalk before vehicles have priority to turn left. LPIs provide the following benefits: Increased visibility of cross
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In South Dakota, freight growth is closely linked to agricultural production. Recent advancements in plant genetics and technology have boosted production of many of the State’s key crops. The South Dakota Department of Transportation (SDDOT) takes the movement of agricultural goods into consideration as it invests in expanding and improving transp
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In 2009, the Federal Highway Administration (FHWA) launched Every Day Counts (EDC) in cooperation with the American Association of State Highway and Transportation Officials (AASHTO) to speed up the delivery of highway projects and to address the challenges presented by limited budgets. EDC is a State-based model to identify and rapidly deploy prov
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2017-08-01
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PDF
On a monthly basis, each State is required to report to the Federal Highway Administration (FHWA), the amount of gallons taxed by that state. This data is analyzed and compiled by FHWA staff. The data on the amount of on-highway fuel use for each State is then used to attribute federal revenue to each State. Yearly, the FHWA, Office of Policy, prov
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