Road traffic accidents in Singapore expressway tunnels

Yeung, Jian Sheng; Wong, Yiik Diew

doi:10.1016/j.tust.2013.09.002

Cited by 129 publications

(61 citation statements)

References 24 publications

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“…However, the results show that the location of accidents at zone 3 result in higher injury risk propensity than transition zones (zone 1 and zone 2).This finding is in line with findings in other studies mentioned above Yeung et al, 2013).…”

Section: Tunnel Factorssupporting

confidence: 91%

Risk factors affecting the severity of traffic accidents at Shanghai river-crossing tunnel

Lü

Xing

Wang

et al. 2015

Traffic Injury Prevention

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Section: Tunnel Factorssupporting

confidence: 91%

Risk factors affecting the severity of traffic accidents at Shanghai river-crossing tunnel

Lü

Xing

Wang

et al. 2015

Traffic Injury Prevention

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“…In this situation, most drivers reduce their speed and increase their lateral distance to the tunnel wall [5]. The risk of accidents in a tunnel is approximately half of that on an open road; however, tunnel accident severity is higher for several reasons, e.g., tunnels make it easier for drivers to get seriously injured by crashing against the tunnel wall compared to the safety barrier in open roads.…”

Section: Introductionmentioning

confidence: 99%

Effects of Lane Width, Lane Position and Edge Shoulder Width on Driving Behavior in Underground Urban Expressways: A Driving Simulator Study

Liu

Wang

2016

IJERPH

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This study tested the effects of lane width, lane position and edge shoulder width on driving behavior for a three-lane underground urban expressway. A driving simulator was used with 24 volunteer test subjects. Five lane widths (2.85, 3.00, 3.25, 3.50, and 3.75 m) and three shoulder widths (0.50, 0.75, and 1.00 m) were studied. Driving speed, lane deviation and subjective perception of driving behavior were collected as performance measures. The results show that lane and shoulder width have significant effects on driving speed. Average driving speed increases from 60.01 km/h in the narrowest lane to 88.05 km/h in the widest lane. While both narrower lanes and shoulders result in reduced speed and lateral lane deviation, the effect of lane width is greater than that of shoulder width. When the lane and shoulder are narrow, drivers in the left or right lane tend to shy away from the tunnel wall, even encroaching into the neighboring middle lane. As the lane or shoulder gets wider, drivers tend to stay in the middle of the lane. An interesting finding is that although few participants acknowledged that lane position had any great bearing on their driving behaviors, the observed driving speed is statistically higher in the left lane than in the other two lanes when the lane width is narrow (in 2.85, 3 and 3.25 m lanes). These findings provided support for amending the current design specifications of urban underground roads, such as the relationship between design speed and lane width, speed limit, and combination form of lanes.

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“…Step 2: update vertex status and safety entropy flow. The status and safety entropy flow of vertex at the next moment can be determined according to equations (8), (12), and (15).…”

Section: Simulation Process and Resultsmentioning

confidence: 99%

An adaptive agent digraph simulation for road traffic safety statue in bridge–tunnel groups

Zhou

Dong

Bin³

et al. 2017

Advances in Mechanical Engineering

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The safety state of road network in the bridge-tunnel groups is an important factor in evaluating road traffic safety. This article describes a case study simulating brittleness behavior of road traffic safety statue in the bridge-tunnel groups. First, the safety state of road network and brittleness behavior characteristics are analyzed; second, the relationship between brittleness behavior and safety entropy is also introduced, and the collapse process of the travel system of road traffic network in the bridge-tunnel groups is simulated, which is based on the adaptive agent digraph theory. Finally, the rear-end accident data from Liu'an mountainous freeway are verified through the reasonability and feasibility of adaptive agent digraph theory. The case study has shown that there is a certain delay in the collapse of whole system; the key of vertex collapse will lead to the collapse of the whole system in a short time; the initial value of each vertex has a significant impact on the collapse of the whole system. The findings in this study provide scientific guidance to potentially improve the current mountainous freeway design and traffic management policy.

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Road traffic accidents in Singapore expressway tunnels

Cited by 129 publications

References 24 publications

Risk factors affecting the severity of traffic accidents at Shanghai river-crossing tunnel

Risk factors affecting the severity of traffic accidents at Shanghai river-crossing tunnel

Effects of Lane Width, Lane Position and Edge Shoulder Width on Driving Behavior in Underground Urban Expressways: A Driving Simulator Study

An adaptive agent digraph simulation for road traffic safety statue in bridge–tunnel groups

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