The journal Injury Prevention published two responses (eLetters) by M. Kary, Montreal mathematician and cyclist, to the Harris et al. study of Vancouver and Toronto bicycle facilities. These letters promised an eventual third letter. Instead, following discussion with the Editor, the third was transformed into a longer Commentary now under consideration at the journal, while the original two letters were consolidated into a single shorter one, intended to replace them. These steps are still underway, but were done under the understanding that once removed, the original first two letters would be published in full elsewhere. They are here:
Kary gives the author of this blog too much credit for “adapting” his work. I only formatted it and added some bibliography items and links to Google Maps imagery. The writing is entirely his, as are all but the Google images.
Kary is also the author of a comprehensive review of the Lusk et al. study of Montreal cycle tracks — or as he says, what the authors describe as cycle tracks, because some are, in fact, paths through parks.
A related post on this blog examines a PDF presentation about the Vancouver/Toronto research.