As a general rule, both the driver and owner are responsible to ensure that a load does not drop or is not likely to drop on a highway.
Secure the entire load to prevent shifting or loss of any portion of the load. Periodic checks must be made to ensure lashing ropes or binder cables have not become slack or chaffed.
When hauling such loose materials as wood chips, paper, refuse, gravel and stones, etc., you should make certain that no part of the load is dislodged; make sure that you completely cover the load with tarpaulin to prevent dangerous driving situations for those following behind you.
Often the wind velocity is strong enough to force large stones to fly out of open boxes causing them to smash windshields. Stones and other loose materials can cause collisions behind or to the sides of the load. As well, littering is an offence chargeable to the driver and the owner of the vehicle.