Copenhagen ICTCT Meeting, May 25th – 27th 1983: A Summary of Discussions and Conclusions

Muhlrad, N

doi:10.1007/978-3-642-82109-7_18

Cited by 3 publications

(4 citation statements)

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“…When two vehicles whose trajectories intersect are defined as potential conflict objects, the time difference between leaving the conflict area is called the post-intrusion time [17] . As shown in figure 1, considering the vehicle size, the inner intersection point of the area face is selected as the critical conflict point, and the time difference between the left-turning vehicle and the oncoming straight ahead vehicle passing the conflict area successively is extracted as the PET value.…”

Section: Research Methodology 21 Traffic Risk Discrimination Methodsmentioning

confidence: 99%

“…Among the commonly used traffic risk assessment indicators, Post Encroachment Time (PET) is more applicable to conflicts involving crossing trajectories, lane changing, and intersections. Moreover, the PET indicator is easier to observe, requires less computation, and provides more accurate risk assessment results [17] . In light of this, based on the traffic data of straight-left conflicts at intersections in Xi'an City, this study quantifies the severity of conflicts using PET values and establishes an unordered logistic model.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the factors influencing the severity of straight-left conflicts under left turn permit phase

Shen,

Jin

2024

International Conference on Smart Transportation and City Engineering (STCE 2023)

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With a permitted left-turn phase, left-turning vehicles irregularly change speed and trajectory to compete for the right of way with straight vehicles approaching from the opposite direction, which brings serious safety hazards to intersection operation. The data collected from three intersections in the high-tech development zone of Xi'an city, and the turning behaviors of left-turning vehicles were classified into three patterns: "no-interference, yield, and rush" based on the interactions between the left-turning vehicles and the straight vehicles approaching from the opposite direction. This study took post encroachment time as the quantitative indicators of the conflict severity, which was classified into 4 levels and the disordered logistic regression model was established to identify the significant factors affecting the conflict severity. The results showed that: the conflict severity of the left-turning vehicles in rush pattern is higher than that in yield pattern. The odds ratio of that the conflict severities were medium, serious conflict respectively increased to 11.598 and 3.348 when the vehicles in rush pattern. The arrival speed of the left-turning vehicles and signal phase were significant factors increasing the severities of conflicts, and the average speed difference and average headway are protective factors. The results of this study can provide a reference for traffic management departments to optimize traffic control schemes.

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Section: Research Methodology 21 Traffic Risk Discrimination Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the factors influencing the severity of straight-left conflicts under left turn permit phase

Shen,

Jin

2024

International Conference on Smart Transportation and City Engineering (STCE 2023)

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“…Introducing a principle of "multi-sectoral" in practise means deep organizational changes, difficult to launch. Below there is a draft of "intersectoral organisation of road safety", [23]. The main thesis is: "Road traffic accidents and injuries are the effect of multi-factorial processes, so road safety management needs to be intersectoral".…”

Section: Intersectoral Organisation Of Road Safetymentioning

confidence: 99%

Methodological aspects of risk management in road transport

Szymanek

2015

Journal of KONBiN

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“…Counting the number of serious conflicts that occur at a location can be used to determine the level of traffic hazard (DeLangen and Tembele 1994). Traffic Conflict Techniques (TCTs) have been developed in a number of European and North American countries to add relevant information to existing accident data or to replace missing accident data (Muhlrad 2007). A conflict is often determined by an abrupt braking maneuver; vehicle tail-lights are observed and any rapid deceleration is noted.…”

Section: Conflict Study and Yield Behaviormentioning

confidence: 99%