Chapter
Jun 29, 2016
Vehicle Speeds Variance Analysis in a Freeway Work Zone Based on the K-S Test
Authors: Biao Wu [email protected], Zhongzhen Yang [email protected], Hongguo Xu [email protected], and Tongyan DaiAuthor Affiliations
Publication: CICTP 2016
Abstract
To develop effective speed-limit strategies and improve driving safety for work zones, the variance analysis for vehicle speeds in work zones was explored. A method on variance analysis for vehicle speeds in work zones was proposed based on the K-S test and validated the method in carriageway lane closure work zones on a dual-way-four-lane freeway. The method of P-P probability plots was utilized to verify normal distribution for the speed samples of trucks and cars in different traffic control divisions of carriageway lane closure work zones and the method of two samples K-S test was adopted to verify the variance significance of vehicle speeds between test sections, respectively. The research results show that the speed samples of trucks and cars are normal distribution and there is significant variance in vehicle speeds in different traffic control divisions of carriageway lane closure work zones.
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© 2016 American Society of Civil Engineers.
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Published online: Jun 29, 2016
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School of Transportation Management, Dalian Maritime Univ., P.O. Box 116026, No.1 Linghai Rd., Dalian; School of Automobile and Traffic Engineering, Heilongjiang Institute of Technology, P.O. Box 150050, No. 999 Hongqi Ave., Harbin. E-mail: [email protected]
School of Transportation Management, Dalian Maritime Univ., P.O. Box 116026, No.1 Linghai Rd., Dalian. E-mail: [email protected]
College of Transportation, Jilin Univ., P.O. Box 130025, No. 5988 Renmin Ave., Changchun. E-mail: [email protected]
Tongyan Dai
School of Automobile and Traffic Engineering, Heilongjiang Institute of Technology, P.O. Box 150050, No. 999 Hongqi Ave., Harbin.
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