by SAE International in United States
The FIA has fitted Accident Data Recorders (ADR) to all Formula1 cars since 1997, and will also fit them to Formula 3000 cars from 2000. Data is recovered, where possible, from all incidents where control of the car has been lost, and the car either impacts another car, or leaves the track and is arrested in a run off area, or impacts a barrier.3-axis, high-g (±250g) and low-g (±50g) accelerometers, car speed, throttle and steering, the lap marker, and from 2000, yaw rate are recorded. The data is analysed to determine the deceleration on the track and the performance of circuit safety features such as run-off areas and barriers. It is sometimes possible to determine the cause of the loss of control from the data available. The data is used to compute deceleration rates for use in the FIA's Circuit and Safety Analysis System (CSAS) for the assessment of circuit safety features, assess barrier and car impact performance, and provide data for accident reconstruction and modelling. A Severity Index Coefficient (SIC) has been developed to…
Fédération Internationale de l'Automobile-Peter G. Wright
by National Highway Traffic Safety Administration in United States
Motorsport is an activity in which accidents are expected to occur, but in which the driver and spectators expect a very high level of protection. Much of the physics and biology are the same as those involved in highway accidents, and the motorsport safety research being carried out in both Europe and the USA can make a significant contribution to road safety. Because many motorsport accidents are recorded on video, data is recorded in on-board Accident Data Recorders and detailed post-accident analysis is carried out; motorsport provides an excellent environment for vehicle safety research.The FIA has researched and implemented changes to vehicle design regulations, circuit design and circuit safety features, driver equipment, race control procedures, and medical intervention standards, to reduce the fatalities and serious injuries per accident by over 90% since the early 1970s. Its target is zero fatalities and serious injuries.The parallels between this approach and Sweden''s Vision Zero policy are clear. In both, the responsibility for road safety is taken away from the driver and handed jointly to the Administration, and to…
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by SAE International in United States
The MRA Moment Method computer program automates an original approach to the analysis of race car handling. For a given speed and power/braking condition, the computer solution covers the full maneuvering envelope and presents the results graphically in one figure. The model is based on a comprehensive nonlinear vehicle representation utilizing tire, chassis, and aerodynamic input data as available to race car designers and developers. The paper will first explain and illustrate the Moment Method in general terms, with some graphical examples.The ability of the technique to model the behavior of an F.1 car traversing a small bump in mid-corner on a Grand Prix circuit is then reviewed. The results correlate well with the driver comments relative to changes in directional stability (plow/spin) as the car pitches over the bump. It also correlates well with the lateral acceleration/speed that the driver is willing to use in this corner.
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