Theory Test Practice Ireland

Question 1016 · Truck theory test

Which system uses exhaust braking to slow a vehicle?

Pick an answer to test yourself.

Correct answer

Retarders.

Official explanation

Retarders can be mechanical, electrical or hydraulic. Mechanical retarders can alter the engine exhaust flow to slow the vehicle without using wheel-mounted brakes. This is called exhaust braking.

Topic
Technical matters · Braking Systems
Also in
This question also appears in the bus theory test.

Practise this topic in the app

Free demo questions for every topic, progress saved, a full mock exam in the official format.

Got it wrong, or had to think? That is one of 909 questions the truck theory test can draw from. Sit the truck mock exam in the official format (100 questions, 120 minutes, pass mark 74) and see how many more you would miss.

Related questions

This question in other languages