Evaluating Geometric Design Characteristics of Two-Lane Two-Way Rural Roads on Crash Frequencies Occurrences

Mirzahossein, Hamid; Adibi, Hadi; Khishdari, Abolfazl; Zargari, Shahriar Afandizadeh; Severino, Alessandro

doi:10.1007/s40996-023-01072-3

Cited by 3 publications

(2 citation statements)

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“…Many studies have examined the relationship between lane width and traffic safety, often using the number of traffic accidents to develop safety performance functions. 18,19 In traditional design concepts, wider lanes are believed to provide an additional safety margin, while narrower lanes are associated with increased collision probabilities. 20,21 However, some researchers have reported that wider lanes tend to encourage speeding, overtaking, and unsafe driving behaviors, leading to disruptions in traffic flow stability.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have examined the relationship between lane width and traffic safety, often using the number of traffic accidents to develop safety performance functions 18,19 . In traditional design concepts, wider lanes are believed to provide an additional safety margin, while narrower lanes are associated with increased collision probabilities 20,21 .…”

Section: Introductionmentioning

confidence: 99%

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A study of vehicle lateral position characteristics and passenger cars' special lane width on expressways

Chen,

Wu,

Dai

et al. 2023

Engineering Reports

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Lane width is crucial for traffic safety management. Previous studies have shown that inappropriate width will lead to an increase in accident probability and unsafe driving behaviors. However, there have been limited studies on determination method of special lane width for different models, especially for passenger cars. To tackle this problem, the lateral driving behavior characteristics of the expressway need to be clarified. This work aims to obtain the appropriate lane width according to the vehicles' width and lateral position characteristics. In this study, the lane lateral residual width (the distance between the vehicle body's contour and the lane marking on the same side) and the lateral safety margin are extracted as characterization indices of vehicle lateral characteristics from natural driving trajectory data of expressways. The effect of vehicle type, driving speed, and lane position on the expressway's trajectory behavior is investigated. The results show that the utilization rate of lane width is higher in the outer lane compared to the inner lane. As driving speed increases, vehicles in the inner and middle lanes exhibit shy away effect, moving away from obstacles. Substantial variations exist in the lateral width of lanes among different vehicle types. When driving in the same lane, passenger cars' lane lateral residual width that is 0.4–0.5 m wider than that of heavy vehicles. The recommended lane width for the safe operation of trucks on expressways is 3.75 m. After a comprehensive analysis of vehicle width, trajectory oscillation, and lateral safety margin, this study proposes a minimum lane width of 3.25 m and a recommended general width of 3.5 m for a passenger car‐only expressway. This study holds great significance in enhancing road safety and provides a valuable theoretical foundation for the design of lane width in a passenger car‐only expressway.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%