What are the most common causes of motorcycle
accidents? According to a 1980 study, the failure of drivers to see motorcycles is the
number-one cause of motorcycle accidents. It found that half of all accidents were caused
by a driver violating the motorcycle’s right of way. In multi-vehicle accidents, drivers
most frequently turned left in front of an oncoming motorcycle. Mistakes by riders were
responsible in two-thirds of single-vehicle motorcycle accidents.