Vehicles driving behind a truck:

Question

Your truck may block the views of drivers behind you, making them unaware of any upcoming hazards that require you to stop. For this reason, it is a good idea to flash your brakes and warn other drivers before slowing or stopping.

Accepted Answer

May have difficulty seeing objects in front of the truck.

Answer

Often have a great view of the roadway in front of them.

Answer

Do not need to signal.