United States. Department of Transportation. Federal Highway Administration
2021-01-01
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In April 2018, Oklahoma updated its Strategic Highway Safety Plan. The following report summarizes Oklahoma’s progress in meeting the objectives of that plan. The Oklahoma Department of Transportation (ODOT) obligated $54.9 million in Highway Safety Improvement Program (HSIP) funds for FY2020. HSIP funds were obligated as follows: 41 percent for br
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United States. Department of Transportation. Federal Highway Administration
2021-01-01
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The North Dakota HSIP is administered through the Programming Division in the North Dakota Department of Transportation (NDDOT). Safety investments are based on the state’s current Strategic Highway Safety Plan (SHSP). The current SHSP document is called ND Vision Zero Plan and has six priority emphasis areas: Lane departure, Intersections ,Alcohol
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The development of automated trucking technology is progressing rapidly, and increasing numbers of on-road pilots suggest that full-scale commercial deployment of partially automated truck platoons on public roads is forthcoming.(1) In the United States, platoons typically consist of two to four trucks equipped with cooperative adaptive cruise cont
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United States. Department of Transportation. Federal Highway Administration
2021-01-01
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During the 2021 state fiscal year, TxDOT let to contract over $275M of Highway Safety Improvement Program projects and an additional $430M safety projects with Road to Zero funds. This past fiscal year was a historic year in terms of amount of funds dedicated strictly to stand alone safety construction projects. However, it deserves noting that the
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United States. Department of Transportation. Federal Highway Administration
2021-01-01
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The Highway Safety Improvement Program (HSIP) report is an annual update prepared by the Statewide Multimodal Planning and Programs Bureau (MPPB) of the New Mexico Department of Transportation (NMDOT) Planning Division (PD). The 2021 HSIP Annual Report is based on the best and most recently available transportation safety data and information, incl
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United States. Department of Transportation. Federal Highway Administration
2021-01-01
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The Highway Safety Improvement Program (HSIP) is a core Federal-aid program with the purpose of achieving a significant reduction in fatalities and serious injuries on all public roads. As per 23 U.S.C. 148(h) and 23 CFR 924.14, states are required to report annually on the progress being made to advance HSIP implementation and evaluation efforts.
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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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This document is a technical summary of the Federal Highway Administration report Novel Highway Signs To Support Infrastructure-Based Motorcycle-Crash Countermeasures: Phase II (FHWA-HRT-21-010).
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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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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Adaptive cruise control (ACC) is a longitudinal control system through which a vehicle can automatically maintain a driver-selected speed and, through the use of radar or light detection and ranging sensors, a preselected gap between itself and a slower-moving vehicle ahead.(1) ACC is marketed as a convenience system that reduces stress and workloa
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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The number of fatal crashes occurring in daylight is about the same as those that occur in darkness. However, the nighttime fatality rate is three times the daytime rate because only 25 percent of vehicle miles traveled (VMT) occur at night. At nighttime, vehicles traveling at higher speeds may not have the ability to stop once a hazard or change i
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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Friction is a critical characteristic of a pavement that affects how vehicles interact with the roadway, including the frequency of crashes. Measuring, monitoring, and maintaining pavement friction—especially at locations where vehicles are frequently turning, slowing, and stopping—can prevent many roadway departure, intersection, and pedestrian-re
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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A local road safety plan (LRSP) provides a framework for identifying, analyzing, and prioritizing roadway safety improvements on local roads. The LRSP development process and content are tailored to local issues and needs. The process results in a prioritized list of issues, risks, actions, and improvements that can be used to reduce fatalities and
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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
2021-01-01
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PDF
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
2021-01-01
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PDF
This systemic approach to intersection safety involves deploying a package of multiple low-cost countermeasures, including enhanced signing and pavement markings, at a large number of stop-controlled intersections within a jurisdiction. These countermeasures increase driver awareness and recognition of the intersections and potential conflicts.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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PDF
While most transportation agencies have established traditional safety review procedures, a road safety audit (RSA) or assessment is unique. RSAs are performed by a multidisciplinary team independent of the project. RSAs consider all road users, account for human factors and road user capabilities, are documented in a formal report, and require a f
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-01-01
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PDF
At a signalized intersection, the yellow change interval is the length of time that the yellow signal indication is displayed following a green signal indication. The yellow signal confirms to motorists that the green has ended and that a red will soon follow.
United States. Department of Transportation. Federal Highway Administration
2021-01-01
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PDF
The Federal Highway Administration (FHWA) Office of Human Environment convened an Environmental Justice (EJ) and Equity Screening Tools Peer Network (Peer Network) and facilitated a four-part series of events between July and October 2021. The purpose of the Peer Network series was to provide a forum for staff at State Departments of Transportation
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