Question What happens if brakes become too hot? Answers They will become too smooth. They will harden. They may stop working. The air compressor will kick in to cool the brakes Explanation If brakes are overused, they may overheat and stop working. This is referred to as brake fade. This questions appears in the following tests: Arkansas Air Brakes Connecticut Air Brakes Massachusetts Class B Knowledge Test North Dakota Class A Knowledge Test North Dakota Tank South Dakota Class B Knowledge Test Tennessee Air Brakes Utah Air Brakes