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- Variable-message_sign abstract "A variable- (also changeable-, electronic-, or dynamic-) message sign, often abbreviated VMS, CMS, or DMS, and in the UK known as a matrix sign,is an electronic traffic sign often used on roadways to give travelers information about special events. Such signs warn of traffic congestion, accidents, incidents, roadwork zones, or speed limits on a specific highway segment. In urban areas, VMS are used within parking guidance and information systems to guide drivers to available car parking spaces. They may also ask vehicles to take alternative routes, limit travel speed, warn of duration and location of the incidents or just inform of the traffic conditions. A complete message on a panel generally includes a problem statement indicating incident, roadwork, stalled vehicle etc.; a location statement indicating where the incident is located; an effect statement indicating lane closure, delay, etc. and an action statement giving suggestion what to do traffic conditions ahead. These signs are also used for AMBER Alert and Silver Alert messages. In some places, VMSes are set up with permanent, semi-static displays indicating predicted travel times to important traffic destinations such as major cities or interchanges along the route of a highway.On the interchange of I-5 and SR 120 in San Joaquin County, California, an automated visibility and speed warning system was installed in 1996 to warn traffic of reduced visibility due to fog (where Tule fog is a common problem in the winter), and of slow or stopped traffic.VMSes were deployed at least as early as the 1960s. The current VMS systems are largely deployed on freeways or trunk highways. Typical messages provide the following information:Crashes, including vehicle spin-out or rolloverStalls affecting normal flow in a lane or on shouldersNon-recurring congestion, often a residual effect of cleared crashClosures of an entire road, e.g. over a mountain pass in winter.Downstream exit ramp closuresDebris on roadwayVehicle firesShort-term maintenance or construction lasting less than three daysPavement failure alertsAMBER Alerts and weather warnings via the warning infrastructure of NOAA Weather Radio's SAME systemTravel timesVariable speed limitsCar park occupancy levels The information comes from a variety of traffic monitoring and surveillance systems. It is expected that by providing real-time information on special events on the oncoming road, VMS can improve vehicles' route selection, reduce travel time, mitigate the severity and duration of incidents and improve the performance of the transportation network.".
- Variable-message_sign thumbnail MN_Changeable_Message_Sign.jpg?width=300.
- Variable-message_sign wikiPageExternalLink part2ithu2n.pdf.
- Variable-message_sign wikiPageExternalLink CMS%20Operation%20and%20Messaging%20Handbook-Final%20Draft.pdf.
- Variable-message_sign wikiPageID "395196".
- Variable-message_sign wikiPageRevisionID "598070958".
- Variable-message_sign hasPhotoCollection Variable-message_sign.
- Variable-message_sign subject Category:Intelligent_transportation_system_sensor.
- Variable-message_sign subject Category:Traffic_signs.
- Variable-message_sign type Abstraction100002137.
- Variable-message_sign type Clue106643763.
- Variable-message_sign type Communication100033020.
- Variable-message_sign type Evidence106643408.
- Variable-message_sign type Indication106797169.
- Variable-message_sign type Sign106646243.
- Variable-message_sign type TrafficSigns.
- Variable-message_sign comment "A variable- (also changeable-, electronic-, or dynamic-) message sign, often abbreviated VMS, CMS, or DMS, and in the UK known as a matrix sign,is an electronic traffic sign often used on roadways to give travelers information about special events. Such signs warn of traffic congestion, accidents, incidents, roadwork zones, or speed limits on a specific highway segment.".
- Variable-message_sign label "Panneau à messages variables".
- Variable-message_sign label "Variable-message sign".
- Variable-message_sign label "Variable-message sign".
- Variable-message_sign label "Wechselverkehrszeichen".
- Variable-message_sign label "道路情報掲示板".
- Variable-message_sign sameAs Wechselverkehrszeichen.
- Variable-message_sign sameAs Panneau_à_messages_variables.
- Variable-message_sign sameAs 道路情報掲示板.
- Variable-message_sign sameAs Variable-message_sign.
- Variable-message_sign sameAs m.0236ny.
- Variable-message_sign sameAs Q1500964.
- Variable-message_sign sameAs Q1500964.
- Variable-message_sign sameAs Variable-message_sign.
- Variable-message_sign wasDerivedFrom Variable-message_sign?oldid=598070958.
- Variable-message_sign depiction MN_Changeable_Message_Sign.jpg.
- Variable-message_sign isPrimaryTopicOf Variable-message_sign.
