Some commercial vehicles use retarders to help slow the vehicle. What are the four types of retarders?

Question

Quizplus · Accepted Answer

There are four types of retarders used on commercial vehicles. These are exhaust, engine, hydraulic and electrical. Retarders are useful in helping slow the vehicle. Their slowing effect allows the brakes to remain cooler and reduces wear on the brakes as well. Drivers should understand how (and when) to use retarder systems.

Some Commercial Vehicles Use Retarders to Help Slow the Vehicle