Abstract
Various road surface deformations generally occur on urban and rural roads due to infrastructure, superstructure deficiencies and excessive heavy vehicle loads. In addition to driver-based errors, many accidents happen due to these mentioned surface deformations. This study aims to present lateral lane utilization and longitudinal driving behaviours on a two-lane deformed road. The effect of deformation on the tendency of drivers’ lane selection, lane utilization, and the movement in traffic flow will also be determined. For this purpose, parameters such as lateral position, speed, acceleration/deceleration and location data of vehicles travelling through four different deformation zones on a two-lane road in Izmir (Turkey), were collected. Based on the fact that in ideal conditions, distribution of lateral positions of vehicles in a lane is similar to normal distribution. The collected data was evaluated with chi-square (χ2) goodness of fit test to see if they are fit to normal distribution or not. This study concluded that if a deformation zone has wider area and less depth, it will be less effective on lateral lane utilization of vehicles. It was also obtained from the results that variation in other parameters such as deformation type, depth and height are associated with the lateral lane utilization of drivers. Additionally, the drivers’ characteristics such as perception and aggressiveness are seen as the most important factors influencing the longitudinal vehicle behaviours while passing through the deformation zones.
Highlights
Various road surface deformations generally occur on urban and rural roads due to infrastructure, superstructure deficiencies and excessive heavy vehicle loads
This study concluded that if a deformation zone has wider area and less depth, it will be less effective on lateral lane utilization of vehicles
Following the determination of the lateral positions of vehicles for each deformation zone, data belonging to lateral lane utilization of vehicles traveling through deformation zones were examined
Summary
Various road surface deformations generally occur on urban and rural roads due to infrastructure, superstructure deficiencies and excessive heavy vehicle loads. Ben-Edigbe (2010) has indicated that adverse conditions have significant impact on level of service of a road He concluded that the deformations would result a significant reduction in speed by up to 50% and in traffic flow by up to 20%. Many researches has been conducted on lane utilization (Gunay 2001, 2009; Timm, Priest 2005; Gunay, Woodward 2007; Tanyel et al 2013; Yousif et al 2013) These studies did not combine the negative effect of surface deformations on lateral lane utilization and longitudinal driving behaviour. The objective of this study is to determine the negative effect of deformations on lateral lane utilization and longitudinal driving behaviours by considering the various effective parameters
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