USAREUR Practice Exam

Under what condition is passing another vehicle prohibited?

1. During rush hour

2. When the traffic situation is unclear

3. When there is a traffic light

4. When the vehicle ahead is going slow

The correct answer is: When the traffic situation is unclear

Passing another vehicle is prohibited when the traffic situation is unclear because doing so could pose significant safety risks for both the driver attempting to pass and other road users. An unclear traffic situation might involve visual obstructions, changing road conditions, or unpredictable behavior from other vehicles. In such instances, passing could lead to collisions or accidents, as the driver cannot accurately assess whether it is safe to maneuver into another lane. Adhering to this rule prioritizes safety and ensures that drivers make informed decisions based on the prevailing conditions of the road. In other situations, such as during rush hour, while it might be difficult to pass due to heavy traffic, it isn't inherently prohibited and would depend on specific local laws and traffic conditions. Similarly, passing is generally not allowed at traffic lights regardless of the conditions, but it can be permissible if the light is green and it is safe to yield. As for slow-moving vehicles, it may be legal to pass them when safe; however, ensuring clarity in the traffic situation remains essential for safe driving practices.