Many bicycle crashes go unreported and therefore are not included in official statistics. Underestimation of crash rates results partly from a lack of recorded data on cyclist-only (CO) injury crashes, that is, crashes in which no contact is made with an automobile. Moreover, less severe injuries tend to get reported less frequently by law enforcement.
Michigan bicycle crash stataistics are collected by law enforcement using the UD-10 form.
Acording to the Office of Highway Safety Planning, in 2012, there were 1,981 bicycles involved in motor vehicles crashes, with 20 bicyclists killed and 1,598 injured. 13 of the bicyclists killed (65.0%) were reported by police to be "going straight ahead" just prior to crash. Addittional Michigan bicycle crash statistics can be found below.
Source: Michigan Traffic Crash Facts