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《Journal of Transportation Systems Engineering and Information Technology》 2013-01
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Speed Distribution Characteristics and Speed Limits of Freeway Work Zones

MENG Xiang-hai1,SHI Yong-yi1,WANG Hao2,XU Han-qing1(1.School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China; 2.Heilongjiang Province Highway Construction Bureau,Harbin 150008,China)  
This paper analyzes the speed distribution of each main component on four kinds of freeway work zones: the closed one-way running lane work zone,the closed one-way passing lane work zone,the closed one-way lanes work zone and the closed one-way transition region work zone.It determines the average speed,the 85th speed,the speed difference of each component,the speed difference between oversize and light vehicles and the over speed vehicles' percentage related to limited speed values.Then,some statistical conclusions are drawn: the standard deviation of vehicles' speed distribution is gradually decreased throughout upstream normal area,warning area(or transition area) and activity area of work zones;the speed difference between oversize and light vehicles also decreases obviously.In the last section,the paper proposes speed control principles and limited speed values of each component on freeway work zones considering the characteristic of speed statistical distribution.
【Fund】: 黑龙江省交通运输厅科技项目(2011-2012)
【CateGory Index】: U491
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