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Transportation Glossary
Term Description

Variable Message Signs (VMS)

Electronic LED signs that provide information on when buses or other transit vehicles will arrive at that location. The information is most often displayed in real-time and can be controlled either from a remote centralized location or locally at the site. They are placed in bus terminals, subway stations, rail platforms, bus stops, etc., to assist travelers by providing up-to-the minute data. VMS are also used as traffic control devices used to provide motorists en route traveler information. They are commonly installed on full-span overhead sign bridges, post-mounted on roadway shoulders, and overhead cantilever structures. VMS are designed to affect motorist behavior to improve traffic flow and operations. Examples of traveler information include: travel times between known destinations; congestion conditions along a freeway corridor; construction notices; special event notice and motorist instructions; maintenance operations schedule; pending severe weather announcement; or incident notification.

NDSU Dept 2880P.O. Box 6050Fargo, ND 58108-6050
(701)231-7767ndsu.ugpti@ndsu.edu