Motorcycling is generally recognized as a relatively risk activity, bu
t surprisingly little is known about motorcyclists' perception of this
risk. This paper presents a survey of motorcyclists' perceived likeli
hood of being involved in an accident and a statistical analysis of th
e factors determining this likelihood. Our results show that motorcycl
ists have a reasonable grasp of the factors that increase the likeliho
od of accident involvement. These factors include exposure (miles ridd
en), regularly riding above the speed limit, and passing vehicles on t
he shoulder or passing between lanes of traffic. The findings suggest
that motorcycle accidents are, for the most part, not the result of mi
sjudgments about the overall risk of motorcycling.