Guidelines on the Use and Operation of Changeable Message Signs (Revised)

摘要

The report is intended to be a primer on the characteristics that affect thedesign, use and operations of changeable message signs (CMSs), and to provide guidance on the selection of the appropriate type of CMS display. Guidelines on the selection and design of CMS messages are presented in a companion Report No. FHWA/TX-92/1232-10 entitled, Guidelines on the Selection and Design of Messages for Changeable Message Signs. The report is an update and consolidation of the following reports: (1) C.L. Dudek and R.D. Huchingson. Manual on Real-Time Motorist Information Displays. Report FHWA-IP-86-16. August 1986; (2) C.L. Dudek. Guidelines on the Use of Changeable Message Signs. Report FHWA-TS-90-043. May 1991; and (3) C.L. Dudek. Portable Changeable Message Signs at Work Zones. Report FHWA/TX-85/07+292-4. July 1984.