Transportation infrastructure: benefits of traffic control signal systems are not being fully realized.

Mode of access: Internet.

Department of Transportation's Intelligent Transportation Systems (ITS) projects.

Mode of access: Internet.

Department of Transportation's Intelligent transportation systems (ITS) projects book.

Mode of access: Internet.

Nationwide Personal Transportation Survey: 1990 NPTS databook. Volume I.

Federal Highway Administration, Washington, D.C.

Evaluation of programs in the Department of Transportation--an assessment.

Mode of access: Internet.

Alternative scenarios for federal transportation policy. Volume I - first year final report.

Transportation Department, Office of University Research, Washington, D.C.

Potential means of cost reduction in grade crossings motorist-warning control equipment. Volume II: comparison of solid state and relay devices and techniques. Final report.

Transportation Systems Center, Cambridge, Mass.

Rail-highway crossing warning device - life cycle cost analysis. Final report.

Federal Railroad Administration, Office of Safety, Washington, D.C.

Certification of transportation engineering technicians.

National Highway Institute, Washington, D.C.

A study of state programs for rail-highway grade crossing improvements. Final report.

Federal Railroad Administration, Office of Policy and Program Development, Washington, D.C.

Highway safety research and development - better management can make it more useful. Report supplement: GAO comments on the Department of Transportation's reply to the March 17, 1980, GAO draft report.

Mode of access: Internet.

Rail-highway crossing hazard prediction research results. Final report.

Transportation Department, Washington, D.C.

Transportation safety information report, July, August, and September 1978. Final report.

Transportation Department, Office of the Assistant Secretary for Policy and International Affairs, Washington, D.C.

Transportation safety information report, January, February and March 1979. Final report.

Transportation Department, Office of the Assistant Secretary for Policy and International Affairs, Washington, D.C.

Transportation safety information report, April, May, and June 1979. Final report.

Transportation Department, Office of the Assistant Secretary for Policy and International Affairs, Washington, D.C.