US Army Europe (USAREUR) Practice Exam

A driver may remain in the passing lane while traveling at a high rate of speed primarily for safety and efficiency reasons. The answer indicates that a driver must only use the passing lane as a means to overtake slower vehicles and should return to their original lane immediately after completing the maneuver. This action minimizes the time spent in the passing lane, reducing the risk of potential collisions with vehicles that may be traveling at higher speeds.

Furthermore, remaining in the passing lane only until the vehicle ahead completes its passing maneuver reinforces the rule that the passing lane should be used temporarily and not as a general travel lane. This practice ensures that the roadway remains safe and efficient for all drivers.

The other options lack the comprehensive requirement of safely and appropriately using the passing lane. For instance, the option regarding remaining in the lane as long as no drivers are behind with flashing lights fails to account for the fact that the passing lane is designated for temporary use; it could lead to unnecessary delays and disrupt traffic flow. Thus, the correct answer emphasizes both the necessary conditions for passing and the appropriate etiquette for using the passing lane.