Under-reporting of bicycle accidents results in not knowing the dangers posed to them.

A recent article (by D. Shinar et. al.) published in the Accident Analysis & Prevention, Volume 110, January 2018) examined the official reporting of bicycle accidents in 17 nations. It was estimated that only about 10% of such collisions were officially reported. Such data indicates the concern that should be shared with respect to recent attempts to build infrastructure in Canada to accommodate cyclists without having a firm understanding of what environments may be more dangerous.