CDL Combination Vehicles TestDriving Combination Vehicles SafelyHard
A commercial driver is operating a combination vehicle and observes a large, unsecured object fall off a flatbed truck several hundred feet ahead in their lane. What is the safest and most effective defensive driving technique for the driver to employ?
- AReduce speed gradually, check mirrors, signal, and change lanes safely if possible; if not, prepare to strike the object at a reduced speed.
- BAttempt to swerve quickly into an adjacent lane, regardless of traffic.
- CBrake hard and steer around the object if there is a clear path, or hit it if unavoidable.
- DSound the horn continuously and flash headlights to alert other drivers.
Show answer & explanationAnswer & explanation
Correct answer: A. Reduce speed gradually, check mirrors, signal, and change lanes safely if possible; if not, prepare to strike the object at a reduced speed.
Sudden swerving or hard braking with a combination vehicle can lead to loss of control, jackknifing, or rollovers. The safest approach is to reduce speed, assess surroundings, and perform a controlled lane change if safe. If not, minimizing impact speed is the next best option.
Why the other options are wrong
- B. Sudden swerving with a combination vehicle is extremely dangerous and often leads to rollovers or loss of control.
- C. Braking hard and steering simultaneously can cause a jackknife. Hitting an object without prior preparation is also risky.
- D. While alerting others is good, it doesn't directly address the immediate threat to your vehicle and is not the primary defensive action.
Object in Roadway
When encountering an object in the road, the priority is to maintain vehicle control. Gradually reduce speed, check for safe escape paths, and only change lanes if clear. If collision is unavoidable, aim to strike it at reduced speed.
- Avoid sudden maneuvers.
- Prioritize control.
- Reduce speed for impact if necessary.
Memory trick: Slow Down, Look Around, Decide, Act Smooth.