Left turn signals for Arizona. Final report.

Arizona Department of Transportation, Phoenix

Driver understanding of work zone flagger signals and signaling devices. Interim report.

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

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

Federal Highway Administration, Washington, D.C.

Visibility and spacing of lane control signals for freeway traffic management.

Texas Department of Transportation, Austin

User guide for removal of not needed traffic signals.

Federal Highway Administration, Washington, D.C.

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.

Signals, traffic software, and lighting: courses and basic references.

Mode of access: Internet.

Field test evaluation of rear lighting deceleration signals: I - analytical and experimental studies. Interim report.

National Highway Traffic Safety Administration, Washington, D.C.

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

Turner-Fairbank Highway Research Center, McLean, Va.

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.

History of the flag of the United States of America : and of the naval and yacht-club signals, seals, and arms, and principal national songs of the United States, with a chronicle of the symbols, standards, banners, and flags of ancient and modern nations /

Includes indexes.

Comparative evaluation of visual distress signals /

Performed by Naval Weapons Support Center, Applied Sciences Department.