Abstract
The regular weather-responsive design of variable speed limit (VSL, as a subsystem of Intelligent Transport System) of freeway relys on expensive realtime detection of road surface friction coefficient, not available for economy-underdeveloped regions. A low-cost approach is proposed to design 2 types of weather-responsive VSL (straight-running VSL subject to visible distance, and curve-running VSL aimed at skid-avoidance) in the absence of friction coefficient, using equivalently-approximated discrete friction coefficient (thresholds) depending on the types and intensities of adverse weather elements (i.e. the road surface conditions of dry or wet, further of water or snow/ice covering adhered on road surface), in stead of expensive realtime-detected continuous friction coefficient.
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Acknowledgments
This paper is supported by National Key Technology R&D Program of China “Key Technologies and System Integration of Network-based Coordinated Control of Freeway Traffic Safety (Project No.: 2014BAG01B04)”, Key Laboratory of Road Traffic Safety of Ministry of Public Security.
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Yuan, J., Wu, Y., Zhang, Z., Ma, Q. (2017). Weather-Responsive Freeway Speed-Limits Using Approximated Friction Coefficient of Road Surface. In: Lu, H. (eds) Proceedings of the Second International Conference on Intelligent Transportation. ICIT 2016. Smart Innovation, Systems and Technologies, vol 53. Springer, Singapore. https://doi.org/10.1007/978-981-10-2398-9_25
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DOI: https://doi.org/10.1007/978-981-10-2398-9_25
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