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Roadcraft refers to the system of car or motorcycle control outlined in two books Roadcraft: The Police Driver's Handbook[1] and Motorcycle Roadcraft: The Police Rider's Handbook.[2]

Overview Edit

File:Roadcraft-system diagram.png

Roadcraft is the UK's police handbook that outlines a system of car and motorcycle control split into five phases represented by the acronym IPSGA:

  1. Information received from the outside world by observation, and given by use of signals such as direction indicators, headlamp flashes, and horn;
  2. Position on the road optimised for safety, visibility and correct routing, followed by best progress;
  3. Speed appropriate to the hazard being approached, attained via explicit braking or throttle control (engine braking), always being able to stop in the distance you can see to be clear on your side of the road;
  4. Gear appropriate for maximum vehicle control through the hazard, selected in one shift; and
  5. Acceleration for clearing the hazard safely.

The Information phase is, arguably, the most important phase, and surrounds (and drives) the other four phases. It may, and often should, be re-applied at any phase in the System.

The System is used whenever a hazard requires a manoeuvre. A hazard is something which requires a change in speed, direction or both. The benefit of applying a systematic approach to driving is to reduce the simultaneous demands on the vehicle, the driver mentally and the driver physically. That is, the System seeks to separate out the phases of a manoeuvre into a logical sequence so that the vehicle and the driver avoid being overwhelmed by having to do too much at the same time. For example, braking and steering at the same time place greater demands on the vehicle's available grip and in the worst case can lead to a skid.

Whilst the books were originally put together at the Metropolitan Police Driving School at Hendon, and intended for police drivers and riders, they have been available for sale to the general public since the mid-1950s. Civilian advanced driving organisations such as the Institute of Advanced Motorists and RoSPA base their teaching and advanced motoring tests on Roadcraft.

References Edit

  1. Coyne, Philip; Penny Mares (1997). Roadcraft: The Police Driver's Handbook, HMSO.
  2. Coyne, Philip; Bill Mayblin, Penny Mares (1996). Motorcycle Roadcraft: The Police Rider's Handbook to Better Motorcycling, HMSO.

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