What’s the speed limit on a dual carriageway when you’re carrying a load that’s 4.5 metres (14 feet 9 inches) wide?

Explanation: Vehicles carrying loads between 4.3 metres (14 feet 1 inch) and 5 metres (16 feet 6 inches) wide are subject to lower speed limits. The limit depends on the type of road. On a motorway it's 40 mph (64 km/h), on a dual carriageway it's 35 mph (56 km/h), and on all other roads it's 30 mph (48 km/h).

Category: Vehicle Weights and Dimensions

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