Vehicle Activated Sign Range

Vehicle activated signs

Vehicle activated signs (VAS) are a proven technology for tacking inappropriate speed at specific locations without enforcement or major road engineering. Vehicle activated signs are proven to:

  • Influence driver behaviour
  • Reduce vehicle speeds
  • Lower accident rates
  • Have a long lasting effect

See TRL report 548 for more details.

Products & Services

  • Speed Activated Signs
    The vehicle triggered message is set to activate when the radar detects vehicles speeding at more than 10% above the limit shown. Fully self contained design for easy installation and moving around...
  • Vehicle activated sign - Slow Down
    Vehicle activated signs with 300mm speed limit roundel and SLOW DOWN legend. Prominent LED speed reminder shown to all vehicles above the given speed. The vehicle triggered message is set to activate...
  • Vehicle activated signs
    Available in all 600mm height TSRGD warning triangles. Used to inform drivers above a given speed to an oncoming hazard. High quality construction, designed and manufactured in the UK by our in-house...


Sheriff Technologies is a Trade Name of DHF Products Ltd.

Units 2 & 3, Whinfield Industrial Estate, Rowlands Gill, NE39 1EH.

Sales: +44 (0)191 230 4411
Accounts: +44 (0)191 230 4422

Standard Conditions of Sale


Follow on Twitter

Connect on Linked In

Web design in Newcastle

Get the Series 5 2013 Timer Programming App

Elexon UMSUG Codes


Microtima Ltd Series 5 Timer & school patrol signal:
software & documentation