Dartford Crossing traffic safety system: advice for drivers
Find out more about the new road layout and traffic safety system at the Dartford Crossing.
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From mid-June 2015 a new traffic safety system will be in use on the A282 (M25) northbound approach to the Dartford tunnels.
The system will identify and stop oversized vehicles or those carrying dangerous goods from entering the tunnels. It will also enable dangerous goods vehicles to be escorted through the tunnels safely and stop traffic in the event of an incident in the tunnels.
This guidance shows you what to expect and how to drive through the traffic safety system.