Evaluation of the ADDCO flip-disc variable message sign.

Federal Highway Administration, Washington, D.C.

Safety and environmental design considerations in the use of commercial electronic variable-message signage. Final report.

Mode of access: Internet.

Assessment of changeable message sign technology. Final report.

Mode of access: Internet.

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

Mode of access: Internet.

Hand receipt covering contents of components of end item (COEI), basic issue items (BII), and additional authorization list (AAL) for message entry device, variable format AN/GSC-21 (VFMED) (NSN 7010-01-017-6967).

"3 June 1983."

Auditory message studies for route diversion. Final report.

Mode of access: Internet.