01477138

Component

https://doi.org/10.3141/2393-11

http://scholar.google.com...uksa&publication_year=2013

Pedestrian safety is a growing concern at signalized intersections. Pedestrians crossing a street at an intersection are exposed to interactions with turning vehicles, and these interactions sometimes result in crashes. Conflicts and crashes can be reduced by implementing protected turn phases. However, the inclusion of protected turn phases in a traffic signal cycle typically causes an increase in vehicular delay, which tends to offset the benefit of reduced crashes. The left-turn operational mode (permissive, protected–permissive, or protected) is typically chosen on the basis of vehicular traffic concerns such as volumes of left-turning and conflicting through vehicles, lane geometry, and sight distance. Historically, pedestrian safety has not been considered a factor in the selection of the left-turn operational mode. Pedestrian safety models have been calibrated with field data. The models allow pedestrian–vehicle conflict frequency and pedestrian compliance with signal indications to be estimated on the basis of volumes and site conditions. These models, along with vehicular delay analysis, form the basis for pedestrian-safety-based guidelines that were developed for choosing the left-turn operational mode. The guidelines are based on identifying threshold conditions for which a change in left-turn mode results in a reduction in road user costs.

01518276

13-3370

English

pp 95–103

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309287173

Print

Figures (3) ; References (8) ; Tables (11)

Guidelines; Left turn phase; Left turns; Pedestrian movement; Pedestrian safety; Pedestrian vehicle interface; Signalized intersections; Traffic models

Highways; Pedestrians and Bicyclists; Safety and Human Factors; I73: Traffic Control; I82: Accidents and Transport Infrastructure

TRIS, TRB, ATRI

Feb 5 2013 12:40PM

• Analysis of Pedestrian Performance in Shared-Space Environments
• Analysis of Pedestrian–Vehicle Traffic Conflicts in Street Designs with Elements of Shared Space
• Application of Computer Vision to Diagnosis of Pedestrian Safety Issues
• Considerations for Integrating Bicycling and Walking Facilities into Urban Infrastructure
• Development of Canadian National Pedestrian Crossing Control Guide
• Do All Roadway Users Want the Same Things? Results from Roadway Design Survey of San Francisco Bay Area Pedestrians, Drivers, Bicyclists, and Transit Users
• Do Complete Streets Cost More Than Incomplete Streets?
• Effect of Advance Yield Markings and Symbolic Signs on Vehicle–Pedestrian Conflicts: Field Evaluation
• Effectiveness of Audible and Tactile Heading Cues at Complex Intersections for Pedestrians Who Are Blind
• Effects of High-Visibility Enforcement on Driver Compliance with Pedestrian Yield Right-of-Way Laws
• Evaluation of Pedestrian Safety: Pedestrian Crash Hot Spots and Risk Factors for Injury Severity
• Feature Analysis and Operation Evaluation of Pedestrian Weaving Zone
• Improving Cyclist and Pedestrian Environment While Maintaining Vehicle Throughput: Before- and After-Construction Analysis
• Missing Links: How Social Paths Can Improve Pedestrian Accessibility to Light Rail
• Pedestrian Crash Risk on Boundary Roadways: University Campus Case Study
• Sight Distance for Disabled Pedestrians at Crossings: Methodology Comparison with Other Modes
• Study on Pedestrian Red-Time Crossing Behavior: Integrated Field Observation and Questionnaire Data
• Use of Spatiotemporal Parameters of Gait for Automated Classification of Pedestrian Gender and Age
• Using a Smartphone Application to Support Visually Impaired Pedestrians at Signalized Intersection Crossings