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High wind is among top highway hazardous in Xinjiang,China,especially for freeways.Windbreak structures are installed along the roadway in windy-zone to ensure the driving safety.This study was conducted to collect in-situ data of the wind speed using different types of Windbreak structure.Simulations were carried out to simulate the wind field of highway using computational fluid dynamic(CFD)software.Types of Windbreak structure,wind speed,location of installation and types of vehicles were considered in the simulation.The optimum installation location of Windbreak structure was recommended.