Editing Variable-message sign (section)

==History==
{{expand section|date=May 2015}}
VMS systems were deployed at least as early as the 1950s on the [[New Jersey Turnpike]].<ref>{{Cite web|url=http://www.roadsbridges.com/amped-traffic-signs-imminent-nj-expressways|title = Amped-up traffic signs imminent for NJ expressways}}</ref> The road's signs of that period, and up to around 2012, were capable of displaying a few messages in neon, all oriented around warning drivers to slow down: "REDUCE SPEED", followed by a warning of either construction, accident, congestion, ice, snow, or fog at a certain distance ahead.<ref>{{Cite web |url=http://www.nj.gov/turnpike/documents/VMS_Guide_031912.pdf |title=Archived copy |access-date=2016-06-01 |archive-date=2015-09-10 |archive-url=https://web.archive.org/web/20150910232933/http://nj.gov/turnpike/documents/VMS_Guide_031912.pdf |url-status=dead }}</ref> The New Jersey Turnpike Authority replaced those signs (along with 1990s-vintage dot-matrix VMS systems along the [[Garden State Parkway]]) with more flexible electronic signs between 2010 and 2016.

The current VMS systems are largely deployed on [[freeway]]s, trunk highways, or in work zones.{{citation needed|date=May 2015}}

On the interchange of [[Interstate 5 in California|I-5]] and [[California State Route 120|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.

Message Signs were deployed in [[Ontario]] during the 1990s and are now being upgraded on [[400-series highways]] as well as two pilot secondary highways in northeastern Ontario.<ref>{{Cite web|url=https://toronto.citynews.ca/2015/01/20/new-ontario-electronic-highway-signs-bilingual-easy-to-read/|title = New Ontario electronic highway signs bilingual, easy to read - CityNews Toronto}}</ref>