A GUIDE TO VARIABLE MESSAGE SIGNS (VMS)

14 Oct.,2023

 

What are Variable Message Signs?

VMS products are an integral part of the UK’s intelligent transportation system. Featuring LED screens to display messages on a range of events, these signs assist drivers and enable them to make safer, more informed decisions. This may come in the form of reducing travel speed, changing lanes or simply increasing awareness of upcoming traffic.

A brief history of Variable Message Signs

While the first major use of VMS units dates back to the 1950s in the United States, other countries like the UK were much slower to adapt. Initially, they used neon tubing to present messages and only alerted motorists to road accidents ahead. Since then, the modern era of VMS systems has adopted remotely controlled LED displays that allow operators to communicate graphics, coloured text and quickly edit signs when required.

As a result, VMS products are a common feature on public and private roads in the UK. However, for use on public highways, these signs must fit certain specifications and standards that are set out by the UK government to ensure good practice. Published by the Department for Transport, the Traffic Advisory Leaflet covers all roadside VMS systems, from simple flap-type fixed signs to more advanced LED panels, as well as the importance of concise messages and ensuring all information is displayed on a single sign aspect.

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