Brake drums cool very quickly when the vehicle is moving very fast. Brakes have more stopping power when they get very hot. The heavier a vehicle or the faster it is moving, the more heat the brakes have to absorb to stop it. All of the above are true.

Release the accelerator. Start stab braking. Counter steer hard. Accelerate slightly.

Gasoline fires. Tire fires. Electrical fires. All of the above.

Stopping is always the safest action in a traffic emergency. Open the door and jump out if you have time. Heavy vehicles can almost always turn more quickly than they can stop. Leaving the road is always more risky that hitting another vehicle.

Steering that feels heavy. Vibration. A loud bang. All of the above.

Some people are not affected by drinking. A few beers have the same effect on driving as a few shots of whisky. Coffee and fresh air can sober a person up. All of the above are true.

Taking short breaks before you are drowsy. Keeping the cab warm. Taking a cold pill. Scheduling trips during hours that you are normally asleep.

Worn wiring insulation. Engine oil level. Condition of belts and hoses. Valve clearance.

It wears down the battery. It can startle other drivers. The horn is not a good way to let others know you're there. You should keep both hands tightly gripping the steering wheel.

Pump the brake pedal. Down shift. Look for an escape ramp or escape route. All of the above.

6-9 seconds 9-12 seconds 12-15 seconds 18-21 seconds

State laws dictate legal weight limits. Slight overloading of a vehicle can make its brakes work better. If the shipper loads cargo, the driver is not responsible for overloading. The legal maximum weight allowed by a state can be considered safe for all driving conditions.

The vehicle?s tail lights should be kept on to warn other drivers. If a hill or curve keeps drivers behind you from seeing the vehicle within 500 feet, the rear reflective triangle should be moved back down the road to give adequate warning. You do not need to put out reflective triangles unless the vehicle will be stopped for 30 minutes or more. All of the above are true.

2 seconds 3 seconds 4 seconds 5 seconds

The weight of the liquid. The legal weight limits. The amount of liquid will expand in transit. All of the above