CDL General Knowledge TestDriving SafelyMedium
When driving a commercial vehicle, how should you adjust your following distance when visibility is reduced due to rain?
- AMaintain the same following distance as in clear weather, as long as your brakes are in good condition.
- BDecrease your following distance to better see the vehicle in front of you.
- CIncrease your following distance to allow for more stopping time.
- DIncrease your speed to clear the area of reduced visibility more quickly.
Show answer & explanationAnswer & explanation
Correct answer: C. Increase your following distance to allow for more stopping time.
Reduced visibility due to rain means it will take longer to perceive hazards and react, and wet roads increase stopping distance. Increasing your following distance provides a crucial safety margin.
Why the other options are wrong
- A. Maintaining the same distance is unsafe due to increased stopping distance and reduced visibility.
- B. Decreasing distance is extremely dangerous as it reduces reaction time and stopping distance.
- D. Increasing speed in reduced visibility and wet conditions is highly dangerous and illegal.
Safe Following Distance (Adverse Conditions)
The increased space a driver maintains behind another vehicle when conditions like rain, snow, or fog reduce visibility or traction.
- Wet roads double stopping distance.
- Reduced visibility decreases reaction time.
- More space allows for safer braking and maneuvering.
Memory trick: Rain, Snow, Fog? Give More Space, No Hog!