An evaluation of stop signs used with flashing traffic signals. Final report.

Turner-Fairbank Highway Research Center, McLean, Va.

Guidelines for flashing traffic control devices. Final report.

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

Evaluation of flashing traffic signal operation. Final report.

Texas Department of Transportation, Austin

A study of clearance intervals, flashing operation, and left-turn phasing at traffic signals. Volume 1: sumary report. Final report.

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

A study of clearance intervals, flashing operation, and left-turn phasing at traffic signals. Volume 2: clearance intervals. Final report.

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

A study of clearance intervals, flashing operation, and left-turn phasing at traffic signals. Volume 3: flashing operation. Final report.

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

Using light emitting diodes in traffic signals -- final report.

Federal Highway Administration, Washington, D.C.

User guide for removal of not needed traffic signals.

Federal Highway Administration, Washington, D.C.

Visibility and comprehension of pedestrian traffic signals /

"May 1997."

Efficacy of red and yellow turn arrows in traffic signals. Final report.

Federal Highway Administration, Washington, D.C.

Advance traffic control warning systems for maintenance. Final report.

Federal Highway Administration, Baton Rouge, Fla.

Criteria for removing traffic signals, technical report /

Mode of access: Internet.

Guidelines for the application of arrow boards in work zones. Final report.

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

Evaluation of dynamic sign systems for narrow bridges. Final report.

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

Motorists' requirements for active grade crossing warning devices. Final report.

Federal Highway Administration, Traffic Systems Division, Washington, D.C.