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 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.