Longer combination vehicles: potential infrastructure impacts, productivity benefits, and safety concerns.

Mode of access: Internet.

Safety effects of cross-section design for two-lane roads. Volume II - appendixes.

Federal Highway Administration, Safety Design Division, McLean, Va.

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.

Effectiveness of alternative skid reduction measures. Volume II: benefit-cost model. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Concrete median barrier research. Volume 1 - executive summary. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Longer combination trucks: potential infrastructure impacts, productivity benefits, and safety concerns.

Mode of access: Internet.

Concrete median barrier research. Volume 2 - research report. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Potential means of cost reduction in grade crossings motorist-warning control equipment. Volume I: overview, technology survey and relay alternatives. Final report.

Transportation Systems Center, Cambridge, Mass.

An analysis of expected delay reduction by replacing a congested at-grade intersection with an interchange.

Texas Department of Transportation, Austin

Truck weight effects on bridge costs. Final report.

Ohio Department of Transportation, Columbus

Proceedings, May 19-21, 1965.

Mode of access: Internet.

Passing lanes and other operational improvements on two-lane highways /

"December 1985."

Roadside concrete barriers: warrants and end treatment. Final report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin

Bulletin.

Publication suspended June 1914-Nov. 1919.

Bulletin - United States, Office of Public Roads.

Mode of access: Internet.