CDL Vehicle Combination Practice Test

When backing a tractor under a trailer, what is the recommended gear to use?

1. Highest reverse gear

2. Neutral

3. Lowest reverse gear

4. Standard forward gear

The correct answer is: Lowest reverse gear

Using the lowest reverse gear when backing a tractor under a trailer is recommended for several important reasons. This gear provides better control and allows for smoother, more gradual movements, which is essential when maneuvering a heavy vehicle like a tractor. It enables the driver to manage the speed effectively and makes it easier to make small adjustments, minimizing the risk of overshooting the alignment with the trailer. Additionally, using the lowest reverse gear helps in maintaining a stable position, as it prevents the vehicle from rolling back too quickly. This is crucial when backing up to connect with a trailer, as proper alignment is vital for a safe and secure coupling. This approach reduces the chances of accidents or damage, both to the vehicle and the trailer, by facilitating a careful and controlled backing process.