Service life of retroreflective traffic signs /

"October 1991."

Traffic operations control for older drivers /

"FHWA-RD-94-119."

Fuel consumption study. Urban traffic control system (UTCS) software support project. Final report.

Federal Energy Administration, Office of Transportation Policy and Research, Washington, D.C.

Variable message signing for traffic surveillance and control - a state of the art report. Final report.

Mode of access: Internet.

Minimum retroreflectivity requirements for traffic signs: summary report.

Mode of access: Internet.

Traffic controls for construction and maintenance work zones. Volume I - office function.

Federal Highway Administration, Washington, D.C.

Traffic controls for construction and maintenance work zones. Volume II - field function.

Federal Highway Administration, Washington, D.C.

A Comparison of methods for evaluating network traffic control systems /

Mode of access: Internet.

Manual on uniform traffic control devices for streets and highways.

Updated by continuing supplements and cumulated irregularly.

Illinois supplement to the national manual on uniform traffic control devices.

"Adopted March 1990."

Illinois supplement to the national manual on uniform traffic control devices /

"March 10, 2011."--cover letter.

Quality standard for work zone traffic control devices, 1998.

These standards, covering highway work zone traffic control devices, were developed for suppliers and contractors doing work for the Illinois Dept. of Transportation.

Traffic control systems in construction workzones /

"Final Report, November 1997-October 1999."

National practices for the operation and protection of school zones and crossings; an informational report by Committee on Traffic, Subcommittee on Traffic Control Devices in cooperation with Colorado Department of Highways.

Cover title.