Variable Message Sign (VMS) on the M8 near to Harthill

Image: © David Dixon Taken: 3 Aug 2019

A variable message sign on the eastbound carriageway of the M8 near to Harthill in North Lanarkshire. Variable message signs (VMS), also sometimes referred to as matrix signs, are electronic traffic signs used on motorways (and some other major routes) to give drivers information about special events and to warn them about traffic congestion, accidents, incidents, roadworks or speed limits on specific sections of the route. They may also suggest (or instruct) drivers to take alternative routes, limit speed, warn of duration and location of the incidents or just inform of the traffic conditions. The large VMS ahead is giving drivers an estimation of how long it is likely to take for them to reach Junction 3 (Livingston) and the junction with the M9 (and hence gives an idea of how congested the motorway is ahead).

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