Evaluation of brake reaction times on a motorcycle http://www.promocycle.com/documentations/studies-eng/evalfrein_e.pdf Summary Brake reaction time (BRT) of motorcyclists was measured on a sample of 1,181 subjects, using stationary real motorcycles coupled to a computer. The test sample was drawn from among public visitors to the 2002 Quebec City Motorcycle and ATV Show and the 2002 Montreal Motorcycle Show. Participation was done on a voluntary basis. The mean BRT obtained by the group of test subjects, all classes combined, was 0.463 seconds. When the subject waited for the signal with fingers already poised over the brake lever and foot positioned over the brake pedal, the mean measured BRT was reduced by 0.154 seconds compared with the procedure in which the subject waited with fingers wrapped around the handlebar and foot placed flat on the footrest. At 100 km/h, an increase of 0.154 seconds represents an increased braking distance of 4.28 metres. The age of the subject, the sex of the subject, and his or her experience of off-road riding, of distance ridden during the previous three years or of automobile driving had no significant bearing on the results. The unique factor influencing BRT in any significant way is the position of the fingers and foot while waiting, or covered mode.