Time exposure photography of smoke plumes /

The advantages of using time exposures to "integrate" plume behavior have been known for some time. The purpose of this writing is to acquaint the research worker with more comprehensive techniques of long (up to nine hours) time exposures, with several illustrations.

An evaluation of driver behavior at signalized intersections. Final report.

Arizona Department of Transportation, Phoenix

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

Federal Highway Administration, Washington, D.C.