Transportation Glossary
Term Description

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.