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Institut français des sciences et technologies des transports, de l’aménagement et des réseaux

Institut français des sciences et technologies des transports, de l’aménagement et des réseaux. Speed limiter, a tool to reduce speeding?. Corinne BRUSQUE Myriam HUGOT Arnaud BONNARD. 257 4864882915. Speed, a road safety issue. a main cause of road crash

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Institut français des sciences et technologies des transports, de l’aménagement et des réseaux

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  1. Institut françaisdes sciences et technologiesdes transports, de l’aménagementet des réseaux Speed limiter, a tool to reduce speeding? Corinne BRUSQUE Myriam HUGOT Arnaud BONNARD

  2. 257 4864882915 Speed, a road safety issue • a main cause of road crash • a major contributory factor in 30% of fatal crashes [TRB, 1998] • a direct influence on accident severity • Implementation of safety interventions to reduce speeding behaviour

  3. Speed regulationsystems

  4. Speed limiter A in-built system that supports the driver in not exceeding a pre-selected speed by limiting the throttle • 4 controls • 1select CC, SL or no system • 2 Store the speed, decrease the selected speed. • 3Disengage and engage the system • 4 Store the speed, increase the selected speed.

  5. Interaction project Who are the IVT users and non users? Where, when, how and why drivers use IVT? What are the real effects of IVT on driving?

  6. Interaction project Where and how drivers use SL?

  7. A small-scale Naturalistic Driving Study (1/3) • Min. 4 weeks 5 instrumentedvehicles Peugeot 308 Renault Clio Estate Peugeot 207 SW

  8. A small-scale Naturalistic Driving Study (2/3) • Drive as you normally would, both regarding your journeys and your driving style. • Use the equipment • according to your habits.

  9. A small-scale Naturalistic Driving Study (3/3)

  10. SL use rate according to road types • 8 SL users among the 16 drivers • 51 hours of SL use • SL use rate = 17 % of time driven with SL on • No effect of road types on SL use rate

  11. SL users strategies 8 drivers users strategies

  12. Mainly highway SL users SL speed distribution Driving time by road type Driver 416 • SL speed on highway is in average 5 km/h above the legal speed limit • No change of the SL speed when they get away from highway

  13. Mainly rural road SL users SL speed distribution Driving time by road type Driver 402 • The SL speed fits the legal speed limit of rural roads • No change of the SL speed when they get away from rural to urban roads

  14. Mixed road SL users SL speed distribution Driving time by road type Driver 412 • Change of the SL speed according to the legal speed limit

  15. The different SL states (1/2) Legal speed limit 90 km/h 130 km/h 90 km/h 50 km/h 2 SLstates SL on SL off SL speed 135 km/h 3 SLstates SL off SL usefull SL useless

  16. The different SL states (2/2)

  17. Conclusion • A pilot study due to the size of the sample • SL speed selected • above the legal speed limit • In order to avoid speed fines • Preferential context of SL use • Highways • Rural roads • Why • Drivers aware that the frequency of speed control differ according to the roads • Unaware that speeding is also a issue in urban area mainly for VRU

  18. Thank for your attention Corinne BRUSQUE, PhDIFSTTAR - LESCOT 25 avenue François Mitterrand69675 Bron Cedex Franceemail : corinne.brusque@ifsttar.fr

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