Triangular projection markers are required when your load is wider than 2.9 metres (9 feet 5 inches). What colour are these markers?

Explanation: The marker boards should be red and white. They must be kept clean and independently lit at night and in poor visibility, so that other road users can see them.

Category: Vehicle Weights and Dimensions

References: The Official DVSA Guide to Driving Goods Vehicles: Section 2