FRI-20.21-1-SITSTL-09
INVESTIGATION OF THE CRITICAL SKIDDING SPEED OF A VEHICLE IN A CURVE
Abstract
Part of the severe road accidents occur when vehicles move along a curve and lose lateral stability. This study presents the relationships for calculating the critical speed at which a vehicle starts to skid. An experimental investigation was conducted to determine the coefficient of friction during emergency braking on a wet pavement in Australia. Basic descriptive statistics and a confidence interval were provided. Based on the obtained results, the critical speeds of skidding were calculated for different curve radii. A comparison of the calculated speeds was also made under the conditions in Bulgaria.
Keywords
Critical speed, Friction coefficient, Road safety, Lateral stability
REFERENCES
- Bassan, S. (2016). Sight distance restriction on highways’ horizontal curves: insights and sensitivity analysis. European Transport Research Review 8, Article number 21.
- Ben-Edigbe J., & Makinde O. (2020). Influence of Night Rainfall on Stopping Sight Distance on Dark Roadways. Open Transportation Journal, Volume 14, 14-32.
- Bukljaš, Z., Radoš, J., & Peh, B. (2012). Calculation of Critical Vehicle Speeds Negotiating Through Curve. Promet - Traffic&Transportation, 10 (3), 141-148.
- Ciępka, M., & R. JanCzur. (2023). Application of Vbox Sport and Vbox 3i devices in the inspection of post-accident vehicles. Problems of Forensic Sciences 2019, vol. 117, 63-71.
- Kirilov, F. (2022). Experimental Studies on the Fundamental Dynamic Properties of Vehicles for Road Traffic Accident Analysis. Dissertation submitted in partial fulfillment of the requirements for the degree of Doctor. p. 173.
- Kuznetsov, Yu., & Ghassan, Ola. (2021). Establishing the requirements for the minimum values of stopping sight distance on the road surface from the condition of vehicle braking safely. IOP Conference Series: Materials Science and Engineering. 1159 (1): 012082.
- Masory O., et.al. (2006). Experimental Determination of the Translational Acceleration Values for a Spinning Vehicle. 19th Florida Conference on Recent Advances in Robotics, May 25-26.
- Neades J. (2007). Determining The Maximum Speed At Which A Bend Can Be Negotiated. Impact Spring, Vol. 16 No. 1.
- Sledge, H. & Marshek, K. (1997). Formulas for Estimating Vehicle Critical Speed From Yaw Marks - A Review, SAE Technical Paper 971148.
- Sun, B., Wei, S., & Li, P. (2024). Analysis of the effect of flow channel structures on the centrifugal accelerated motion of particles in a vacuum state. Scientific Reports 14, 8634.