Estimating the severity of safety related behaviour

Svensson, Andreas; Hydén, Christer

doi:10.1016/j.aap.2005.10.009

Cited by 159 publications

(90 citation statements)

References 1 publication

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“…Looking at the general picture, it can be seen that the vast majority of the recorded conflicts in both the before-and the after-case are Grade 1 (slight), with the number of more severe conflicts reducing with increasing severity, thus following the expected "pyramid" form (32). Comparing the before-and after-situation, it is found that the total number of conflicts across the site is lower in the after-case; this finding consists of a significant reduction in slight conflicts (Grade 1), coupled with relatively constant (insignificantly higher) low levels of serious conflicts (Grades 2, 3 and 4).…”

Section: 2mentioning

confidence: 99%

Analysis of Pedestrian–Vehicle Traffic Conflicts in Street Designs with Elements of Shared Space

Kaparias

Bell

Dong

et al. 2013

Transportation Research Record: Journal of the Transportation R

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This is the accepted version of the paper.This version of the publication may differ from the final published version. http://openaccess.city.ac.uk/ publications@city.ac.uk Permanent repository link: City Research Online ANALYSIS OF PEDESTRIAN-VEHICLE TRAFFIC CONFLICTS IN STREET DESIGNS WITH ELEMENTS OF SHARED SPACE Ioannis KapariasCollaborative Transport Hub, School of Engineering and Mathematical Sciences, City University London, Northampton Square, London EC1V 0HB, UK Email: kaparias@city.ac.uk Michael G. H. BellInstitute of Transport and Logistics Studies, University of Sydney, Newtown Campus C37, 144 Burren Street, Sydney, NSW, Australia Email: michael.bell@sydney.edu.au Weili DongCentre for Transport Studies, Department of Civil and Environmental Engineering, Skempton Building, South Kensington Campus, Imperial College London, London SW7 2BU, UK Email: weili.dong08@imperial.ac.uk Aditya SastrawinataCentre for Transport Studies, Department of Civil and Environmental Engineering, Skempton Building, South Kensington Campus, Imperial College London, London SW7 2BU, UK Email: aditya.sastrawinata08@imperial.ac.uk Amritpal SinghCentre for Transport Studies, Department of Civil and Environmental Engineering, Skempton Building, South Kensington Campus, Imperial College London, London SW7 2BU, UK Email: amritpal.singh08@imperial.ac.uk Xuxi WangCentre for Transport Studies, Department of Civil and Environmental Engineering, Skempton Building, South Kensington Campus, Imperial College London, London SW7 2BU, UK Email: xuxi.wang08@imperial.ac.uk Bill MountCentre for Transport Studies, Department of Civil and Environmental Engineering, Skempton Building, South Kensington Campus, Imperial College London, London SW7 2BU, UK Email: bill.mount49@googlemail.com ABSTRACTThis paper investigates changes in pedestrian-vehicle traffic conflicts in urban streets redesigned according to the principles of shared space, using a recently developed Pedestrian-Vehicle Conflicts Analysis (PVCA) method. In a first step, the PVCA method is revised to more accurately reflect the features of shared space: this includes the definition of a systematic process for identifying conflict occurrences on one hand, and the full quantification of the conflict severity grading process on the other. Then, the refined PVCA method is applied to a case study in London, using video data from periods before and after the redevelopment of the Exhibition Road site from a conventional dual carriageway to a modern design with some elements of shared space. The results of the comparative analysis carried out indicate a general decrease in traffic conflict rates as a result of the redesign, but also highlight specific issues that may require additional analysis. INTRODUCTIONThe concept of shared space has emerged as part of a continuous trend over many years towards a more integrated approach to the design of urban streets, where both pedestrians and vehicles are present. Inspired by advances in the field of urban planning, it revolves around layouts aimed at as...

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Section: 2mentioning

confidence: 99%

Analysis of Pedestrian–Vehicle Traffic Conflicts in Street Designs with Elements of Shared Space

Kaparias

Bell

Dong

et al. 2013

Transportation Research Record: Journal of the Transportation R

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“…Street-crossing is a continuous interaction between pedestrians and oncoming vehicles (Svensson & Hyden, 2006). A pedestrian makes a crossing decision based on the judgment of whether a gap in the traffic is large enough to pass safely.…”

Section: Introductionmentioning

confidence: 99%

The estimation of vehicle speed and stopping distance by pedestrians crossing streets in a naturalistic traffic environment

Sun

Zhuang

et al. 2015

Transportation Research Part F: Traffic Psychology and Behaviou

101

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“…Traffic conflicts have received the most attention and are defined as "observational situation(s) in which two or more road users approach each other in space and time to such an extent that a collision is imminent if their movements remain unchanged" (Amundsen and Hydén, 1977). Svensson and Hydén (2006) used traffic conflict techniques (Hydén, 1987) and showed that the distribution of the severity of conflicts is different in signalized and non-signalized intersections. Other approaches study conditions known to favour the occurrence of collisions, such as red-light running (Midenet, 2005).…”

Section: Safety In Signalized Intersectionsmentioning

confidence: 99%

Exposure to lateral collision in signalized intersections with protected left turn under different traffic control strategies

Midenet

Saunier

Boillot³

2011

Accident Analysis & Prevention

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This paper proposes an original definition of the exposure to lateral collision in signalized intersections and discusses the results of a real world experiment. This exposure is defined as the duration of situations where the stream that is given the right-of-way goes through the conflict zone while road users are waiting in the cross-traffic approach. This measure, obtained from video sensors, makes it possible to compare different operating conditions such as different traffic signal strategies. The data from a real world experiment is used, where the adaptive real-time strategy CRONOS (ContRol Of Networks by Optimization of Switchovers) and a time-plan strategy with vehicle-actuated ranges alternately controlled an isolated intersection near Paris. Hourly samples with similar traffic volumes are compared and the exposure to lateral collision is different in various areas of the intersection and various traffic conditions for the two strategies. The total exposure under peak hour traffic conditions drops by roughly 5 min per hour with the CRONOS strategy compared to the time-plan strategy, which occurs mostly on entry streams. The results are analyzed through the decomposition of cycles in phase sequences and recommendations are made for traffic control strategies.

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Estimating the severity of safety related behaviour

Cited by 159 publications

References 1 publication

Analysis of Pedestrian–Vehicle Traffic Conflicts in Street Designs with Elements of Shared Space

Analysis of Pedestrian–Vehicle Traffic Conflicts in Street Designs with Elements of Shared Space

The estimation of vehicle speed and stopping distance by pedestrians crossing streets in a naturalistic traffic environment

Exposure to lateral collision in signalized intersections with protected left turn under different traffic control strategies

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