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Table 4 Measured tire widths of bicycles commonly sold in seven Toronto bike shops, by bike type

From: Bicycling crashes on streetcar (tram) or train tracks: mixed methods to identify prevention measures

  N Mean width (mm) Minimum width (mm) Maximum width (mm) Proportion <34.5 mma Proportion > 50 mmb
All bike types 37 37.5 24.8 112 54 % 8 %
 Single speed, fixed gear 5 27.1 24.8 29.8   
 Commuter 9 34.4 29.9 38.8   
 City 7 34.4 27.1 47.8   
 Hybrid 8 35.2 25.6 55.7   
 Touring, road 3 35.6 32.7 37.1   
 Cruiser 2 54.5 49.0 60.0   
Other: comfort, cargo, fat 3 67.9 41.8 112   
Bike Share Toronto bikesc   49.5  
  1. mm millimeter
  2. Narrow enough to be caught in most Toronto streetcar flangeways
  3. Widest flangeway specified in US guidelines for streetcar systems similar to Toronto’s [12]
  4. Personal communication, Scott Hancock, Motivate Company Toronto, January 2016