Idaho CDL Permit Test - Double

B:C fire extinguishers are designed to work on electrical fires and burning liquids. Don't pour water on an electrical fire.

If a vehicle is top-heavy, it is more likely to roll over. The weight of cargo should be positioned as low in a trailer as possible to minimize this risk.

An Anti-Lock Braking System (ABS) helps prevent wheels from locking up during a hard application of brakes.

The doors of a trailer should be not be opened in the event of a cargo fire, especially if the cargo includes hazardous materials. Opening trailer doors would increase the fire's oxygen supply, potentially causing the fire to increase in size.

Completing the steps of a vehicle inspection in the same order before every trip aids in learning what the proper steps are. Additionally, you be less likely to forget a step when going through the checklist in a prescribed order.

If you begin to feel tired while driving, you should stop to get some sleep. Trying to push on to reach your destination while tired is dangerous. You should not rely on caffeine to keep you awake.

A driver should inspect wheels before a drive, specifically looking for damage on the wheels and rims. Wheels or rims that have had welding repairs are not safe for use.