Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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An Estimate of Vehicle Velocity of Braking Starting Point

제동 직전 자동차 주행 속도 추정에 관한 연구

  • Han, Chang-Pyoung (Department of Mechanical Engineering, Graduate School, Kyoung Hee University) ;
  • Park, Kyoung-Suk (College of Advanced Technology and Engineering, Kyoung Hee University) ;
  • Choi, Myung-Jin (College of Advanced Technology and Engineering, Kyoung Hee University)
  • 한창평 (경희대학교 대학원 기계공학과) ;
  • 박경석 (경희대학교 테크노공학대학) ;
  • 최명진 (경희대학교 테크노공학대학)
  • Published : 2007.09.01
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Abstract

The transient brake time or distance is one of very important factors to guess the vehicle speed to inspect an automobile accident. But, it is usual that the vehicle speed is estimated by using only skid mark without considering the transient brake distance. Deceleration and the friction coefficients of tire and road surface play an important role in calculating the brake distance. In this paper, a scheme is presented to estimate more accurate automobile speed. The scheme contains the effect of the transient brake distance on the speed. Experiment was carried out on the asphalt, unpacked road to get relationships between the speeds and the skid mark distances, and to get the transient brake time. The experimental results were utilized to construct the equation to approximate more realistic vehicle speeds.

Keywords

References

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