Question Where is the safety relief valve usually located? Answers Near the rear brake Near the front brake In an air tank On the dashboard Explanation An air brake system's safety relief valve is located in the tank that is first to receive air from the compressor. This questions appears in the following tests: Alabama Air Brakes Colorado Class A Knowledge Test Colorado Air Brakes Georgia Class B Knowledge Test Illinois Class B Knowledge Test Minnesota Class B Knowledge Test Montana Air Brakes Nebraska Class A Knowledge Test Nebraska Class B Knowledge Test New York Class B Knowledge Test North Carolina Class A Knowledge Test North Dakota Class B Knowledge Test North Dakota Air Brakes Texas Class A Knowledge Test Texas Class A Knowledge Test Texas Air Brakes