Steer Davies Gleave (2012) Cycle route choice: Final survey and model report. Available at: http://content.tfl.gov.uk/understanding-cycle-route-choice.pdf (accessed 11 Sep 2018). “For every minute spent cycling on a road without a lane respondents would spend 1.4 minutes to cycle in a bus lane, 1.45 to cycle in an advisory (narrow) cycle lane, 1.67 to cycle in a mandatory (wide) lane and 3.17 to cycle off-road.”
