What does this sign mean?

Explanation: If you see this sign, be aware that there's a danger of grounding. This can happen where there's a pronounced bump in the road, such as at a level crossing or a hump bridge.

Category: Vehicle Weights and Dimensions

References: The Official DVSA Guide to Driving Buses and Coaches: Section 3, The Official DVSA Guide to Driving Goods Vehicles: Section 2, Highway Code: Page 109