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Principles of designing for the bicycle

Principles of designing for the bicycle. John Franklin Cycling Skills & Safety Consultant. Core principles. Conservation of momentum Even surfaces Maximise visibility Personal space Secondary defence Make it legal. Conservation of momentum. Each stop = 100 metres travel

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Principles of designing for the bicycle

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  1. Principles of designing for the bicycle John FranklinCycling Skills & Safety Consultant

  2. Core principles • Conservation of momentum • Even surfaces • Maximise visibility • Personal space • Secondary defence • Make it legal

  3. 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

  4. TYPICAL CYCLING SPEEDS(on the level)

  5. Even surfaces • Poor surfaces destroy momentum • Comfort and safety considerations

  6. Observation and Visibility • Looking ahead easy (eye movement) • Looking behind more difficult (head movement) and less stable

  7. Observation and visibility • A common cause of crashes

  8. Personal space • For comfort and safety • To provide margin for ‘drift’ and error

  9. Personal space

  10. Personal space More space needed if: • Traffic speeds > 30mph • High-sided vehicles • Strong wind or heavy rain

  11. Personal space

  12. Secondary Defence • No-one should be hurt because they make a single error of judgement

  13. Make it legal

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