This research tries to recognize all primary factors that are associated with speed variation on multilane highways, including roadway access density, which is considered to be the most distinct contributing factor. Additionally, other factors are considered for this purpose: configuration of speed limits, characteristics of traffic volume, geometrics of roadways, driver behavior, environmental factors, etc. A microscopic traffic simulation method based on TSIS (Traffic Software Integrated System) is used to exploit mathematical models to quantify the influences of all possible factors on speed variation. It was found that SSD (Speed Standard Deviation) of roadway segment increase with the increase of access density, traffic volume and speed limit. Adversely, SSD decrease with the increase in the number of lanes. It is concluded that new access density can represent a number of characteristics of access point, which could directly affect the roadway safety; such as access density, traffic volume of main road, number of lanes of main road and speed limit; a statistical model is proposed to show that access density, traffic volume, and speed limit have positive effects on SSD, while the number of lanes has negative effect.
A Simulation Study for Minimizing Operating Speed Variation of Multilane Highways by Controlling Access
Second International Conference on Transportation Information and Safety ; 2013 ; Wuhan, China
ICTIS 2013 ; 1393-1401
2013-06-11
Conference paper
Electronic Resource
English
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