This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Video-Based System for Measuring the Braking Performance of a Bicycle
Technical Paper
2018-01-5032
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Event:
Automotive Technical Papers
Language:
English
Abstract
The following article describes a methodology for using a video-based system to
measure the deceleration or braking performance of a bicycle after the rider
applies the brakes. The bicycle’s deceleration was calculated from the equation
of motion using the initial velocity and the braking distance, which is the
difference between the point of brake initiation (POBI) and the bicycle’s point
of rest (POR). The POBI was determined by using a GoPro camera mounted on the
chain stay near the rear axle that captured a brake light wired into the rear
brakes while the test cyclist rode alongside of a 100-foot surveyor tape. The
POR or more specifically where the rear wheel stopped was documented next to the
100-foot surveyor tape. This methodology was evaluated under two braking
conditions: rear brake only (RBO) and front and rear brake (FARB). The results
demonstrated that the video-based system provided reasonably accurate
measurements, on the order of 5% for assessing the braking performance of a
bicycle for speeds in the range of 15 miles per hour (mph) or less.
Additionally, observations regarding skid marks and rider technique during
braking are also discussed.
Recommended Content
Authors
Topic
Citation
Joganich, T., "A Video-Based System for Measuring the Braking Performance of a Bicycle," SAE Technical Paper 2018-01-5032, 2018, https://doi.org/10.4271/2018-01-5032.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 |
Also In
References
- Marlow , D.E. 1976
- VBOX Automotive https://www.vboxautomotive.co.uk/index.php/en/ 2016
- http://www.vericomcomputers.com/index.html 2016
- Sloane , E.A. Sloane’s Complete Book of Cycling. Fireside 1995
- Bretting , G. , Jansen , H. , Callahan , M. , Bogler , J. et al. Analysis of Bicycle Pitch-Over in a Controlled Environment SAE Int. J. Passeng. Cars - Mech. Syst. 3 1 57 71 2010 10.4271/2010-01-0064
- Daily , J. et al. Fundamentals of Traffic Crash Reconstruction Jacksonville, FL Institute of Police Technology and Management 2007
- http://physics.wustl.edu/introphys/Phys117_118/LabManual/Tutorials/ErrorAnalysisTutorial.pdf 2018
- 2011
- Wilson , D.G. Bicycling Science Cambridge, MA The MIT Press 2004
- Fries , T. , Smith , J. , and Cronrath , K. Stopping Characteristics for Motorcycles in Accident Situations SAE Technical Paper 890734 1989 10.4271/890734
- Collins , J. Accident Reconstruction Charles , C. Thomas Publisher 1979 128 132 Baxter , A.T. Motorcycle Accident Investigation Jacksonville, FL Institute of Police Technology and Management 1997
- 2008