How often should motorcyclists check mirrors while driving on a freeway?

Answer: C — Every 5-10 seconds.

Motorcyclists should check their mirrors every 5-10 seconds while driving on a freeway to maintain situational awareness and ensure safety. This interval allows riders to be aware of surrounding traffic conditions, including vehicles that may be approaching from behind, changes in traffic flow, and the positioning of other vehicles in adjacent lanes. Frequent mirror checks are crucial on a freeway, where speeds are higher and situations can change rapidly. By looking at the mirrors at these intervals, riders can make informed decisions about lane changes, merges, and maintaining a safe following distance. Checking mirrors too infrequently, as suggested by the longer intervals, might result in missing vital information about other road users, increasing the risk of accidents. Conversely, looking every 1-2 seconds may lead to distraction or over-focus on the mirrors rather than the road ahead, which can be equally unsafe. Thus, the 5-10 second guideline strikes a balance between vigilance and focus on the road.