The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
Glance legibility studies conducted at the TTI Proving Grounds examined the legibility of three commercially available LCS with respect to symbol, signal type, subject gender, and subject age. Also, the effect of ambient light conditions was also explored. Symbols on all three signals resulted in median glance legibility distances of304.8 meters (1
...
This report represents the first of two documents examining strategies to encourage and enhance transit use in Texas and throughout the country. The second report entitled Examination of Policies and Programs Supporting Transit Use in Texas, identifies general approaches and implementation techniques to encourage greater use of all types of transit
...
This study examines strategies employed to encourage and enhance transit use in Texas and throughout the country. Two reports document the results of this research. The first is Design Guidelines to Enhance Pedestrian and Transit Interaction, which presents a step-by-step process for planning and designing transit facilities to enhance passenger co
...
A summary of the 1993 analysis of cost responsibility, including estimates for 1994 and 1995, is presented. The methodological process is described. The process involves 1) designation of vehicle classes and fleet estimation; 2) revenue estimation and allocation; 3) cost estimation and allocation; and 4) revenue/cost comparison. Based on the analys
...
This report will describe the various kinds of information that can be obtained from roads and highways with Ground Penetrating Radar. In the last 5 years, attention has focused on measuring the thickness of the asphalt surfacing layer on flexible pavements with air-launched horn antennas. Other antennas are available with substantially different d
...
The Texas Department of Transportation is considering the upgrade and improvement of Interstate 35 (IH- 35) in the Austin area. Study 7-1953 was directed toward providing assistance to the Austin District to analyze IH-35 design alternatives. TTI assisted the District in reviewing the designs and integrating HOV lanes in the designs. To support the
...
Providing effective roadside warning devices for drivers of large trucks is critical on freeway connectors where speeds are relatively high, but design speeds may be substantially lower than on main lanes. Identifying and testing appropriate methods of monitoring traffic on freeway connectors was included in an earlier phase of this research. Two m
...
This report documents a study of the roles and responsibilities of the various agencies and groups responsible for planning, funding, and operating public transit services in Texas. These include transit agencies and service operators, the Texas Department of Transportation (TxDOT), metropolitan planning organizations (MPOs), local communities, fed
...
Hot-in-place recycling (HIR) is a method for rehabilitation of asphalt pavements. Potential for cost savings and resource preservation are high because existing pavement materials are processed on-site, with only the addition of small amounts of recycling agent.The Oregon Department of Transportation (ODOT) constructed HIR projects in 1992 and 1993
...
This guidebook is designed to be a hands-on, planner-friendly document that answers hard questions about intermodal management system planning in practice.
This guidebook is designed to be a hands-on, planner-friendly document that answers hard questions about intermodal management system planning in practice. The guidebook is written from the perspective of the Commonwealth of Massachusetts' development of its statewide intermodal management system (IMS) work plan, which includes coordination with al
...
The potential legislative requirement for incorporation of scrap rubber into asphalt blends mandated a thorough evaluation of the influence of scrap rubber additives on the physical properties and aging characteristics of rubber/asphalt blends. Blends with up to 20% ground vulcanized rubber (both crumb and 200 mesh powder particles) from recycled t
...
The purpose of this review was to survey the literature examining alcohol effects on human behavior and performance, especially low alcohol dose effects. Other comprehensive reviews on this topic from 1975 to 1990 found that alcohol could affect all classes of performance, but that the kinds of performance most sensitive to low dose effects depende
...
This report is a summarization of the proceedings of a joint industry FAA conference on the development and use of PC-based aviation training devices (PCATDs) that was held June 16-17, 1994, in Oklahoma City, Oklahoma. Attendees to the conference included representatives from the PC development community, various universities conducting aviation tr
...
The Run-Off-Road Collision Avoidance Using IVHS Countermeasures program is to address the single vehicle crash problem through application of technology to prevent and/or reduce the severity of these crashes. This report contains a summary of data used in the clinical analysis conducted in Task 1. The data was extracted from the NASS CDS cases sele
...
The Run-Off-Road Collision Avoidance Using IVHS Countermeasures program is to address the single vehicle crash problem through application of technology to prevent and/or reduce the severity of these crashes. This report describes and documents the analysis sequence completed for Task 1. The sequence included three distinct analysis types which may
...
America's railroads handle 37.5% of all freight shipped within the continental United States. Because of the competition from other modes of transportation, the rail industry is eager to improve its operational effectiveness. Smooth and efficient rail yard operations can improve delivery date reliability, reduce the time it takes a rail car to trav
...
The purpose of this chapter is to provide adequate protection against the risks to life and property inherent in the transportation of hazardous material in commerce by improving the regulatory and enforcement authority of the Secretary of Transportation.
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.