Passenger vehicles, and trucks in particular, cannot stop or make a 90° turn on the spot. The faster you are moving, the fewer escape routes there are available to avoid hitting something or someone, such as a cyclist.

Car A is travelling slower than car B
Trucks are harder to control and require more time to react than automobiles because of their size and weight. Trucks also have longer braking times and distances than automobiles.

Over 90% of motorists' decisions are based on what they see.
.