This publication contains guidance for preparing plans and specifications and for ensuring the quality of recycled bituminous concrete. In addition, this manual provides useful information to design engineers, laboratory personnel, and inspectors concerning the mix design, plant production, and laydown of recycled pavement mixtures. Recycling pavement materials has proved to be a feasible process to rehabilitate worn-out pavements. Since recycled pavements will not always be cost-effective, recycling should be considered when repairing or rehabilitating existing pavements.

This report presents results on the demographics of safety belt use from the 2003 National Occupant Protection Use Survey (NOPUS), with particular emphasis on results that evaluate aspects of the 2003 Click It or Ticket campaign to raise safety belt use nationwide.

This study explores the relationship between vehicle occupancy and several other variables in the National Highway Traffic Safety Administration's (NHTSA) Fatality Analysis Reporting System (FARS) database and a 15-passenger van's risk of rollover. A univariate analysis is used to demonstrate the effect of selected variables on single-vehicle rollover crashes. Variables used include speed, number of occupants, driver experience and avoidance maneuvers. Also, a logistic regression model is constructed using data from NHTSA's State Data System - a collection of all police reported crashes for that state. The resulting model permits jointly estimating the effect of these variables on the odds and rate of rollover occurrence, conditional on being in a single-vehicle police-reported crash.

Intelligent Transport Systems (ITS) use information and communications technologies (ICT) to deliver transport improvements instead of extending physical infrastructure, thereby saving money and reducing environmental impact. This book provides an overview of ICT-based intelligent road transport systems with an emphasis on evaluation methods and recent evaluation results of ITS development and deployment. Topics covered include: ITS evaluation policy; frameworks and methods for ITS evaluation; ITS impact evaluation; the network perspective; field operational tests (FOTs); assessing transport measures using cost-benefit and multicriteria analysis; technical assessment of the performance of in-vehicle systems; opportunities and challenges in the era of new pervasive technology; evaluation of automated driving functions; user-related evaluation of ADAS (Advanced Driver Assistance Systems) and automated driving; evaluation of traffic management; performance assessment of a wet weather pilot system; case studies from China; heavy vehicle overload control benefit and cost. With chapters from an international panel of leading experts, this book is essential reading for researchers and advanced students from academia, industry and government working in intelligent road transport systems.

This report provides the results of a survey of State highway agencies in the United States on partnering agreements with utility companies and whether any have agreements similar to the Australian MOUs. It also provides a step-by-step approach for developing an Australian-type MOU in the United States, a sample MOU template, and a sample conflict resolution matrix for handling differences that may arise.

This guide discusses the basic provisions of the conformity process, including the following: (1) A description of actions subject to conformity; (2) Frequency of conformity determinations; (3) Key components of a conformity determination; (4) Consequences of a failure to make a conformity determination; and (5) Roles and responsibilities of public agency staff, management, policy officials, and decision makers in the conformity process.

Blair Barnhardt's vision and goal is to create a movement across this nation that will increase awareness and training for pavement managers, politicians and everyday people that will in turn resurrect our flailing roadway system with less money and less carbon footprint. He is one of the few individuals that recognize the enormity of the problem at hand, but also brings the practical solution to solving it, hence The Book on Better Roads.

This publication will introduce you to the materials and methods used to construct flexible pavements for streets, highways, parking lots, and open storage areas. Flexible pavements are constructed using bituminous (asphalt or tar) concrete. The pavement's principal components are the subgrade, select materials for a subbase course, the base course, and the bituminous concrete pavement. This publication will introduce you to the important characteristics of these components, and a design methodology that will guide you in selection of appropriate material specifications and course thicknesses.

About 93 trains a day on average crossed into the continental United States from Canada and Mexico in 2014, according to U.S. Department of Transportation's (DOT) Bureau of Transportation Statistics (BTS). Trains enter and leave the United States through 30 port of entries (POEs) -- 23 on the northern border and 7 on the southern border. Although international freight rail plays an important role in U.S. economic and trade interests, the movement of rail through U.S. communities at the border can result in blocked highway-rail grade crossings and vehicle traffic congestion. This book describes the factors that affect the movement of freight rail and the actions taken by federal agencies and others to expedite freight rail in selected POEs; and examines what is known about the impacts of freight rail operations on highway-rail grade crossings in POE communities. Moreover, the book addresses recent changes in U.S. rail and truck freight flows and the extent to which related traffic congestion is reported to impact communities; and the extent to which DOTs efforts to implement Moving Ahead for Progress in the 21st Century Act (MAP-21) address freight-related traffic congestion in communities.

Federal spending on highways totaled $46 billion in 2014, roughly a quarter of total public spending on highways. About 95 percent of that amount was spent for the construction of highways or for their improvement, expansion, and major repair, and the remainder was spent for operation and maintenance. Recently, two factors have combined to highlight the importance of making each dollar spent on federal highway programs more productive economically. First, the federal governments main source of funds for highways -- gasoline tax revenues dedicated to the Highway Trust Fund -- has been insufficient to pay for federal spending on highways. Since 2008, lawmakers have transferred about $143 billion from other sources to maintain a positive balance in the trust fund. Second, adjusted for changes in construction costs, total federal spending on highways buys less now than at any time since the early 1990s. This book discusses approaches to making federal highway spending more productive, as well as the status of the Highway Trust Fund and options for paying for highway spending.

NHTSA conducted a survey from April to October 2005 to collect information about the types of restraint systems that were being used to keep children safe while riding in passenger vehicles. In particular, NHTSA was interested in whether drivers with Lower Anchors and Tethers for Children (LATCH)- equipped vehicles were using LATCH to secure their child safety seats to the vehicle, and if so, were these seats properly installed. The make/model and the type of restraint installed in each seating position were recorded for each of the vehicles; demographic characteristics and the type of restraint system were collected for each occupant. In addition, information was gathered about the drivers' knowledge of booster seats and LATCH, along with their opinions on how easy it was to use LATCH.

With the increasing popularity of cellular phones and public concern about the safety of using phones while driving, there has been increased interest in tracking the incidence of driver cell phone use. This report presents the National Highway Traffic Safety Administration's (NHTSA) most recent results on this topic, which come from NHTSA's National Occupant Protection Use Survey (NOPUS). The survey estimated that during daylight hours, drivers of cars, trucks, vans, and sport utility vehicles used hand-held phones during 4% of their driving time in 2002, up from 3% in 2000. These results were obtained by observing actual traffic. In fact the NOPUS is currently the only source of probability-based observed national data on driver cell phone use.

Federal Motor Vehicle Safety Standard (FMVSS) 201 - Occupant Protection in Interior Impact - was upgraded in 1995, with a 1998-2002 phase-in, to reduce occupants' risk of head injury from contact during crashes with a vehicle's upper interior, including its pillars, roof headers and side rails, and the upper roof. Initially, energy-absorbing materials alone were used to meet the standard; later, some vehicles were also equipped with head-protection air bags. NHTSA does not yet have enough crash data to evaluate the injury-reducing effectiveness of the energy-absorbing materials. However, the agency has conducted 154 matched pairs of impact tests with free-motion headforms in pre- and post-standard vehicles of 15 selected make-models.

Beginning September 1, 1993, all light trucks (pickup trucks, vans, and sport utility vehicles) were required to meet a crush resistance standard for side doors. Data from calendar years 1989 through 2001 of the Fatality Analysis Reporting System (FARS) were used to determine the effectiveness of changes made by vehicle manufacturers to meet this standard. Effectiveness was determined by comparing changes in the number of fatalities in side impacts relative to those in frontal impacts.

Rear window defrosting and defogging systems are not required on motor vehicles by any Federal standard. Rear window defoggers became available as optional or standard equipment in most cars during the 1970's or 1980's and are popular with consumers. Today, almost all passenger cars, minivans, and sport utility vehicles have rear window defoggers, but most pickup trucks and full-size vans do not. The analysis examined whether there were proportionately fewer backing-up and changing-lane crashes involving cars with rear-window defoggers than cars without rear-window defoggers. The database was extracted from State crash files.