What is a primary cause of single-vehicle motorcycle collisions?

The primary cause of single-vehicle motorcycle collisions often stems from motorcyclists turning too wide in a curve or turn. This can occur when riders misjudge their speed or the angle necessary to navigate a turn safely. When a motorcyclist is leaning into a curve, the proper technique involves maintaining a balanced body position and adjusting speed accordingly to avoid losing control. If a rider turns too wide, they may find themselves veering into oncoming traffic or off the roadway, which significantly increases the risk of a collision without involving other vehicles. This behavior commonly results in accidents that do not involve other road users, making it a key factor in single-vehicle incidents.

The other choices, while they may contribute to different types of motorcycle hazards, do not primarily lead to single-vehicle accidents in the same direct manner as improper turning technique does.