Truck crossing

W344

Where: On any road.
Purpose: To warn that heavy vehicles regularly cross or join the road from the left or right.
Action: Look out for trucks that could force you to slow down. Slow down and look out for trucks that want to cross or join the road. Also look out for anything spilt or dropped on the road by the trucks like gravel, sand or water that could affect the handling of your vehicle.

Manual on Road Traffic Signs, page 32.