121. Why a damage of exhaust system is a danger?
Poisonous fumes can enter into the cab or sleeping compartment.
122. Which of these is NOT a danger when an automatic transmission is forced into a low gear at a high speed?
A loss of engine braking effect.
123. Perception distance is the distance your vehicle travels from the time:
The eyes see a hazard to the time the brain knows that this is a hazard.
124. Extra care is needed to keep your vehicle centered in your lane because commercial vehicles:
Are often wider than other vehicles.
125. You should lightly apply your brakes to flash the brake lights if:
You are about to exit the road and need to slow down.