The American Journal of Public Health recently published a paper from the UBC Cycling in Cities Research Program with the detailed results from their "Bicyclists' Injuries and the Cycling Environment" study.
Researchers interviewed 690 cyclists who experienced a severe injury, and conducted an analysis based on each cyclist's route and injury site.
The study examined which cycling injury risk associated with different route types. The researchers found that the route type that poses the greatest risk to cyclists is "major streets with parked cars and no bike infrastructure".
TCAT was a non-profit member of the research team.
A summary of the findings, and links to further resources and information, are available on the Cycling in Cities website: http://cyclingincities.spph.ubc.ca/injuries/the-bice-study/