A broken exhaust system can allow poisonous gas to enter the cab. Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question A broken exhaust system can allow poisonous gas to enter the cab. Answers True False Explanation A broken exhaust system is extremely hazardous because it can permit poisonous fumes to enter the vehicle's cab or sleeper berth. This questions appears in the following tests: Minnesota Class A Knowledge Test