USAREUR Practice Exam

What indicates that a driver is moving too fast when in the passing lane?

1. Frequent honking from other drivers

2. Flashing headlights from approaching vehicles

3. Traffic signals changing quickly

4. Signage indicating speed limits

The correct answer is: Flashing headlights from approaching vehicles

Flashing headlights from approaching vehicles is a significant indicator that a driver may be moving too fast in the passing lane. This behavior typically suggests that those drivers behind or approaching the vehicle are urging the driver to either increase speed to pass safely or to move back to the right lane, as they may be traveling at a faster pace. Headlight flashing is a common signal among drivers indicating that they may need to make an immediate adjustment in speed or lane position to avoid potential collisions or disruptions in traffic flow. Frequent honking from other drivers can be a warning as well, but it doesn't specifically indicate speed alone; it might relate to various other situational factors such as distracted driving or inappropriate lane changes. Traffic signals changing quickly primarily affect a driver's decision-making at intersections rather than indicating speed in a passing lane. Signage indicating speed limits is essential for regulatory purposes but does not provide real-time feedback about a driver's speed when in the passing lane. Therefore, flashing headlights serve as a more immediate and situationally relevant signal regarding speed.