Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.
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Transcript of Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.
![Page 1: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/1.jpg)
Principles of designing for the bicycle
John FranklinCycling Skills & Safety Consultant
![Page 2: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/2.jpg)
Core principles
• Conservation of momentum• Even surfaces• Maximise visibility• Personal space• Secondary defence• Make it legal
![Page 3: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/3.jpg)
Conservation of momentum
• Each stop = 100 metres travel• Each person has optimum rate of pedalling• Direct, easy routes that minimise stopping and
accommodate likely speeds
![Page 4: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/4.jpg)
TYPICAL CYCLING SPEEDS(on the level)
Sports cyclist 20 – 30+ mph
Confident commuter 15 – 20 mph
General utility /commuter
10 – 15 mph
Children 10 – 20 mph
Leisure rider 10 – 15 mph
![Page 5: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/5.jpg)
Even surfaces
• Poor surfaces destroy momentum• Comfort and safety considerations
![Page 6: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/6.jpg)
Observation and Visibility
• Looking ahead easy (eye movement)• Looking behind more difficult (head movement)
and less stable
![Page 7: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/7.jpg)
Observation and visibility
• A common cause of crashes
![Page 8: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/8.jpg)
Personal space
• For comfort and safety• To provide margin for
‘drift’ and error
![Page 9: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/9.jpg)
Personal space
![Page 10: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/10.jpg)
Personal space
More space needed if:• Traffic speeds > 30mph• High-sided vehicles• Strong wind or heavy rain
![Page 11: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/11.jpg)
Personal space
![Page 12: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/12.jpg)
Secondary Defence
• No-one should be hurt because they make a single error of judgement
![Page 13: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/13.jpg)
Make it legal
![Page 14: Principles of designing for the bicycle John Franklin Cycling Skills & Safety Consultant.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551b8c08550346a6148b5d16/html5/thumbnails/14.jpg)