HazMat
This endorsement is required to haul hazardous materials as defined in Title 49, CFR, §383.5. To receive this endorsement, drivers must also pass a Transportation Security Administration background check. To receive this endorsement, applicants must pass a test. The test consists of 30 multiple choice questions. To pass, the applicant must answer at least 24 questions correctly. Each question has three or four possible answer choices. Test questions come from the Mississippi Professional Driver’s Manual. Questions come from the chapters covering: Hazardous Materials, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. The Hazardous Materials endorsement can be used with Class A, B and C CDL.
Number of Question
Passing Score
1. Leaking shock absorbers:
Explanation
The suspension system keeps a vehicle's axles in place. Damaged suspension parts, such as leaking shock absorbers, may be potentially dangerous defects on a vehicle.
2. A loss of air pressure in the emergency line will cause:
Explanation
The emergency air line controls the emergency brakes on a combination vehicle. A loss of air pressure in the emergency line will cause the emergency trailer brakes to activate.
3. Rough acceleration:
Explanation
Always speed up smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage.
4. Steering wheel play should be no more than:
Explanation
A steering wheel should have no more than 10 degrees of play. This is equal to about two inches of movement at the rim of a 20-inch wheel. If there is more play than this, it may be difficult to steer.
5. The best way to avoid glare at night from oncoming vehicles is to:
Explanation
To avoid being blinded by the lights of oncoming vehicles, you can glance to the right side of the road until the vehicle has passed.
6. If confronted by an aggressive driver, you should:
Explanation
