In this project, the research team evaluated the performance of Permeable Friction Courses (PFC) over time and compared it against other types of wearing surface pavement layers. Several pavement sections including Asphalt Rubber (AR) PFCs, Performance Graded (PG) PFCs, and dense-graded Hot Mix Asphalt (HMA) were monitored over a four-year period. Non-destructive on-site measurements included noise, drainability, texture, friction, and skid. The change of these variables with time as well as the influence of traffic, binder/mixture type, aggregate classification, and climatic region was evaluated. Accident data were also gathered and analyzed on a more comprehensive number of pavement sections across Texas. All of this information was compiled in database format. In addition, when performance issues were identified, field cores were acquired for forensic evaluation. Results from the multiyear performance data analysis and previous research were used to produce guidelines and recommendations to improve the design, construction, and maintenance of PFCs.

The purpose of this report is to analyze the crash-reduction benefits of LED stop lamps and LED center high-mounted stop lamps (CHMSL) using real-world crash data.

The objective of this project is to investigate the data quality measures and how they are applied to travel time prediction. This project showcases a short term travel time prediction method that takes into account the data needs of the real time

This report provides guidance and better practice recommendations to the NPS for selecting pavement surfaces to minimize tire-pavement noise. The report contains an overview of common technologies and methods for quieter pavements, descriptions of research and quieter pavement specifications developed by several state agencies, and a directory of state agency noise and materials/pavement engineers. A brief introduction to some of the fundamentals of tire-pavement noise is included in an appendix.

This report is a statistical evaluation of the fatality- and injury-reducing effectiveness of the energy-absorbing materials in vehicles without head-protection air bags. (NHTSA previously evaluated the effectiveness of head-protection air bags in 2007.2) In one sense, this report evaluates a specific technological approach (energy-absorbing materials without air bags) that is already phasing out. But the energy-absorbing materials, themselves, will not be phasing out; they will continue to appear in new vehicles to protect occupants in crashes where the air bags do not deploy or perhaps at locations not covered by the air bags. More generally, the report investigates whether a technology demonstrated to have reduced HIC measured on headforms in laboratory testing is likewise effective in reducing the head injuries of people in crashes.

The report details how NHTSA produces these lives saved estimates for seat belts and frontal air bags. The methodology is described in detail, including the use of effectiveness ratings for seat belts and frontal air bags. Seat belt effectiveness ratings vary according to the seat belt type (i.e., 3-point belt versus 2-point lap belt), vehicle type, occupant seating position, and occupant age. Frontal air bag effectiveness ratings are consistent for all passenger vehicles. The interactions of the effectiveness of seat belts and the effectiveness of frontal air bags are discussed in this report.

Dieses Essential behandelt das spezielle Problem der Modellierung der betrieblichen Inanspruchnahme der Infrastruktur durch Zugfahrten als Voraussetzung fur die Ermittlung konfliktfreier Fahrplantrassen in der rechnergestutzten Fahrplankonstruktion. Die in den heute am Markt befindlichen Softwareloesungen realisierten Methoden, namlich das Sperrzeitmodell und die vereinfachte Betrachtung fahrplantechnischer Zugfolgeabschnitte, werden ausfuhrlich erlautert und mit ihren Vor- und Nachteilen gegenubergestellt. Diskutiert werden auch alternative Ansatze und moegliche Weiterentwicklungen.

Run-off-road (ROR) crashes, which usually involve only a single vehicle, contribute to a large portion of fatalities and serious injuries to motor vehicle occupants. In this study, the National Motor Vehicle Crash Causation Survey (NMVCCS) data collected at crash scenes between 2005 and 2007 is used to identify the ROR critical pre-crash event, assess the critical reason for the ROR critical event, and examine associated factors present in the pre-crash phase of the ROR crash. The effect of antilock brake system (ABS) and electronic stability control (ESC) on ROR crashes is also evaluated.

This book introduces the basics of safety needs identification, countermeasure selection, and implementation of treatments designed to reduce the number of roadway crashes and resulting injuries and fatalities. It describes the current state of the practice and research regarding finding roadway safety issues, choosing treatments, and implementing their installation. The book also focuses on crashes occurring at intersections, work zones, and as the result of a lane departure.

Through the U.S. Department of Transportation's (USDOT) Safe Trip-21 initiative, the USDOT is testing a variety of technologies in a number of location in California as well as along the I-95 corridor on the east coast. this document presents the evaluation findings, resulting primarily from in-person interviews the evaluation Team conducted with institutional partners.

This report presents results from the 2010 National Occupant Protections use Survey (NOPUS) Controlled Intersection Study,

Located in the center of downtown Rome, New York, Fort Stanwix currently experiences several transportation-related issues affecting visitor access to the park and overall visitor experience. As a follow-up to a 2006 Alternative Transportation Study, the goals of this report are threefold: 1) to update the 2006 study's existing conditions report to reflect recent changes that have occurred in and around the park, 2) to evaluate five specific areas of concern to the park, which were identified in the 2006 study, and 3) to identify opportunities to a) address these areas of concern; b) improve visitor experience at the park; and c) strengthen the park's relationship with the city by furthering city and county goals. The five areas of concern to the park are nonmotorized trail connections, vehicular signage and wayfinding, parking, pedestrian access, and shuttle feasibility. Findings for each of these focus areas are summarized.

Statistical analyses based on FARS and NASS CDS data from 1997 to 2009 found that a vehicle equipped with electronic stability control (ESC) had a smaller likelihood of being involved in a crash than a similar vehicle without ESC. This analysis estimates the magnitude of that reduction for different types of crashes and for different types of vehicles.

Electronic Stability Control (ESC) is a safety technology designed to enhance a vehicle's stability and control in all driving situations ESC first became available in the United States in 1997 Statistical analyses of 1997-2004 crash data from the Fatality Analysis Reporting System (FARS) and 1997-2003 crash data from the State data files estimate reductions with ESC for various types of crash involvements

This report was one in a series of pedestrian safety synthesis reports prepared for the Federal Highway Administration (FHWA) to document pedestrian safety in other countries. This report is a review of recent pedestrian safety research in Sweden (in particular) with some attention to similar research in other Scandinavian countries. The report states that even in Sweden, where attention has long been paid to pedestrian and bicyclists concerns, even so, still too much traffic planning is addressed as if it were a vehicular issue only.

On February 16, 2012, about 8:15 a.m., near Chesterfield, New Jersey, a Garden State Transport Corporation 2012 IC Bus, LLC, school bus was transporting 25 students to Chesterfield Elementary School. The bus was traveling north on Burlington County Road (BCR) 660, while a Herman's Trucking Inc. 2004 Mack roll-off truck with a fully loaded dump container was traveling east on BCR 528, approaching the intersection. The bus driver had stopped at the flashing red traffic beacon and STOP sign. As the bus pulled away from the white stop line and entered the intersection, it failed to yield to the truck and was struck behind the left rear axle. The bus rotated nearly 180 degrees and subsequently struck a traffic beacon support pole. One bus passenger was killed. Five bus passengers sustained serious injuries, 10 passengers and the bus driver received minor injuries, and nine passengers and the truck driver were uninjured. Major safety issues identified in this investigation were school bus driver fatigue, sedating prescription medications, medical conditions, and commercial driver's license medical examinations; truck driver speed, oversight of overweight commercial vehicles, brake maintenance, and final stage manufacturing air brake system installation; connected vehicle technology; and school bus occupant injuries and school bus crashworthiness. The National Transportation Safety Board makes recommendations to the Federal Motor Carrier Safety Administration; National Highway Traffic Safety Administration; states of California, Florida, Louisiana, New Jersey, New York, and Texas; National Truck Equipment Association; National Association of State Directors of Pupil Transportation Services; National Association for Pupil Transportation; National School Transportation Association; School Bus Manufacturers Technical Council; National Safety Council, School Transportation Section; and Herman's Trucking Inc.

This guidance is provided to assist transportation planners and environmental practitioners in the use of corridor and subarea planning to inform the National Environmental Policy Act (NEPA) review process. This document responds to the need for additional guidance on how best to use corridor and subarea planning to bridge the transportation planning and NEPA processes as described in Appendix A to 23 Code of Federal Regulations (CFR) Part 450 - Linking the Transportation Planning and NEPA Processes.

This publication will introduce you to materials, criteria, and procedures for rapid repair of uncontrolled cracks and spalls in rigid pavements by using epoxy resin grouts, mortars, and concretes. Seven crack conditions that encompass most of the crack types that will be encountered will be discussed. This course is applicable to the repair of rigid pavements on roads and airport runways and taxiways.

This work describes the statistical analyses based on data for calendar years 1995 to 2007 from the Fatality Analysis Reporting System (FARS) and the General Estimates System (GES) of the National Automotive Sampling System (NASS) estimate the long-term effectiveness of antilock brake systems (ABS) for passenger cars and LTVs (light trucks and vans) subsequent to the 1995 launch of public information programs on how to use ABS correctly.

This report was one in a series of pedestrian safety synthesis reports prepared for the Federal Highway Administration (FHWA) to document pedestrian safety in other countries. This review reports research in six areas of pedestrian safety: 1) Interventions to prompt pedestrians to watch for turning vehicles. 2) Improving pedestrian signals for better indication of clearance interval. 3) Use of pedestrian-activated beacons at uncontrolled crossings. 4) Use of advance stop lines. 5) Increasing conspicuity of crosswalks. 6) Use of multiple interventions to increase motorist yielding to pedestrians. Research results are presented and a comprehensive list of references is provided.

The National Highway Traffic Safety Administration (NHYSA) began to evaluate its federal Motor Vehicle Safety Standards (FMVSS) in 1975. By October 2004, NHTSA had evaluated the effectiveness of virtually all the life-saving technologies introduced in passenger cars, pickup trucks, sport utility vehicles and vans from about 1960 up through the later 1990's. A statistical model estimated the number of lives saved from 1960 to 2002 by the combination of these life-saving technologies. FARS data for 1975-2002 document the actual crash fatalities in vehicles that, especially in recent years, include many safety technologies. Using NHTSA's published effectiveness estimates, the model estimates how many people would have died if the vehicles had not been equipped with any of the safety technologies. In addition to equipment meeting specific FMVSS, the model tallies lives saved by installations in advance of the FMVSS, back to 1960, and by non-compulsory improvements, such as the redesign of mid and lower instrument panels. FARS data have been available since 1975, but an extension of the model allows estimates of lives saved in 1960-1974. The annual number of lives saved grew quite steadily from 1960 to 2002, when most cars and light trucks were equipped with numerous modern safety technologies and belt use on the road.

Through the U.S. Department of Transportation's (USDOT) SafeTrip-21 initiative, the USDOT is testing a variety of technologies in a number of locations in California as well as along the I-95 corridor on the east coast. This document presents the evaluation findings, resulting primarily from in-person interviews the Evaluation Team conducted with institutional partners.