Development of criteria for altering existing full cloverleaf interchanges to improve the traffic operations and safety of this particular configuration. Only the standard cloverleaf configuration with a loop ramp and an outer connection in each quadrant was considered in this study. The data based form the Interstate System Accident Research-Study
...
Vehicle detectors are key components of all street and freeway traffic control and surveillance systems. Detector requirements for these applications include: low cost, accurate detection, minimum installation time and cost, reliable under all environmental conditions, low maintenance and calibration requirements, and ability to detect all vehicles
...
1974-12-01
|
Nationwide Personal Transportation Survey (NPTS)
|
PDF
The effect of selected variable on car ownership is examined. First part of the report relates car ownership to place of residence of driver, household composition and income. The second part of the report relates car ownership to characteristics of the automobile including age of automobile and automobile ownership rates by place of residence and
...
Highway Design for Motor Vehicles—A Historical Review; Highway Engineers Look at Rivers as a System; Second Annual FCP Review Held in Texas; The Effects of the Energy Crisis on Rural Roads in Maine; The National Technical Information Service; Flood Peak Estimates from Small Rural Watersheds
Three areas were briefly investigated: 1) analysis of various formulations for scour around bridge piers, 2) ongoing Federal Highway Administration field studies of scour around bridge piers, and 3) recommendations for future research. Practically all of the presently available scour formulas can be reduced to a common set of dimensionless paramete
...
Data on fatal and nonfatal injuries in motor vehicle traffic accidents for calendar year 1973 are summarized highway system in the tables. These tables, compiled from reports submitted by the 50 States and the District of Columbia, include data for all roads and streets.
This report "Highway Travel Forecasts" is the result of a Federal Highway Administration study to reevaluate national highway travel forecasts in light of such factors as declining birth rates, possible saturation of vehicle ownership, and fuel constraints. Results indicate that highway travel is expected to increase at an annual compound rate of 2
...
This "Guide" has been issued to assist the States in preparing their respective inventory manuals. It supersedes the April 1967, edition. Conditions encountered in some States may require certain departures from these instructions. However, road classifications by surface type and other such data to be reported in national summaries should remain u
...
From the well-known hypothesis that is expected that a degree of geologically based similarity would exist in the surface properties of those systems showing a similarity of surface geometry, it is reasonable to assume that drainage basins with the same degree of stability (or instability) possess a certain similarity in geomorphology and channel n
...
A computer program developed to perform an Economic Analysis of Roadway Occupancy for Maintenance and Rehabilitation EAROMAR is documented. Input includes pavement design, thickness, lanes, project length, initial and final year traffic. The program generates hourly traffic volume by trip purpose, direction and year; vehicle operational cost as a f
...
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.