Can anyone refer me to studies of Stopping Distances of Bicycles?
Can anyone refer me to studies of Stopping Distances of Bicycles?
(OP)
I remember reading somehwere that a modern bicycle is unique among vehicles in that it can stop within either (I am not sure which) its own length or its wheelbase. However, so can a car if its velocity is low enough!
I am seeking any studies of bicycles' stopping distances at various speeds.
Thanks in advance if you can help.
I am seeking any studies of bicycles' stopping distances at various speeds.
Thanks in advance if you can help.





RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
Nigel Waterhouse & Associates
Aeronautical Consulting Engineers
Transport Canada and F.A.A approval & certification of fixed and rotor wing aircraft alterations: Structures, Systems, Powerplants and electrical. FAA PMA, TC PDA.
n_a_waterhouse@hotmail.com
RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
Wolfdog
Wolf / "Wolfdog"
RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
(1) Stopping distance. A bicycle
equipped with only handbrakes shall be
tested for stopping distance by a rider
of at least 68.1 kg (150 lb) weight in accordance
with the performance test,
§ 1512.18(d)(2) (v) and (vi), and shall have
a stopping distance of no greater than
4.57 m (15 ft) from the actual test speed
as determined by the equivalent
ground speed specified in
§ 1512.18(d)(2)(vi).
Nigel Waterhouse & Associates
Aeronautical Consulting Engineers
Transport Canada and F.A.A approval & certification of fixed and rotor wing aircraft alterations: Structures, Systems, Powerplants and electrical. FAA PMA, TC PDA.
n_a_waterhouse@hotmail.com
RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
They use a stopping sight distance formula of
S = V^2/(254(f+G) +V/1.4
S = meters
V = km/h
F - 0.25
RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
S = meters
V = km/h
F = 0.25
G = Grade
PS: NYSDOT uses 20 mph for a bicycle design speed. Higher speeds should be used on downhill sections.
RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
A study of actual stopping distances and performance would be next to useless because of the huge number of variables to do with frame design, front suspension, actual brake employed, tyre type, surface... in fact the list goes on way too far to list here.
RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
For rigid frame bikes, frame design will matter little. Suspension design would have a much bigger effect, since it will affect weight transfer from the back tire to the front tire.
For road or path design purposes, we can eliminate many of these variables, since we're interested in the poor end of the performance spectrum. That's where the AASHTO equation listed above comes in.
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RE: Can anyone refer me to studies of Stopping Distances of Bicycles?
All of which I really point out to justify my very first statement to Wolfdog. Sorry if I took this too far off-topic.
Cheers
Jon Weaving
www.gripsport.com.au