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Space Syntax: An Innovative Pedestrian Volume Modeling Tool for Pedestrian Safety

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  • Raford, Noah
  • Ragland, David R

Abstract

This paper describes an innovative pedestrian modeling technique known as Space Syntax, which was used to create estimates of pedestrian volumes for the city of Oakland, California. These estimates were used to calculate pedestrian exposure rates and to create a Relative Risk Index for the city’s first pedestrian master plan. A major challenge facing planners, transportation engineers, and pedestrian-safety advocates is the lack of detailed and high quality pedestrian-exposure data. Exposure is defined as the rate of contact with a potentially harmful agent or event. Pedestrian exposure is therefore defined as the rate of pedestrian contact with potentially harmfully situations involving moving vehicles (e.g., crossing an intersection). Pedestrian risk is defined as the probability that a pedestrian-vehicle collision will occur, based on the rate of exposure. To estimate exposure, pedestrian volume measurements must be made, but such measurements not easily available. In the absence of accurate exposure data, pedestrian-safety decisions are often made by estimation, rules of thumb, or political influence, resulting in mixed and potentially less effective outcomes. This paper also explores the value of the Space Syntax volume-modeling approach for generating estimates of pedestrian exposure, using the City of Oakland as a case study. It discusses the method’s theoretical background, data requirements, implementation, and results. The author suggests that the output of the model - city-wide pedestrian volume estimates - is useful to pedestrians, planners and transportation engineers, and he discusses the value of the pedestrian-exposure concept for the planning professional.

Suggested Citation

  • Raford, Noah & Ragland, David R, 2003. "Space Syntax: An Innovative Pedestrian Volume Modeling Tool for Pedestrian Safety," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt50m064zp, Institute of Transportation Studies, UC Berkeley.
  • Handle: RePEc:cdl:itsrrp:qt50m064zp
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    Citations

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    Cited by:

    1. Geyer, Judy & Raford, Noah & Ragland, David & Pham, Trinh, 2006. "The Continuing Debate about Safety in Numbers—Data from Oakland, CA," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt5498x882, Institute of Transportation Studies, UC Berkeley.
    2. Raford, Noah & Ragland, David, 2006. "Pedestrian Volume Modeling for Traffic Safety and Exposure Analysis: The Case of Boston, Massachusetts," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt61n3s4zr, Institute of Transportation Studies, UC Berkeley.
    3. Raford, Noah & Ragland, David R., 2005. "Pedestrian Volume Modeling for Traffic Safety and Exposure Analysis:," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt9cn8d3nq, Institute of Transportation Studies, UC Berkeley.
    4. Geyer, Judy & Raford, Noah & Ragland, David & Pham, Trinh, 2005. "The Continuing Debate about Safety in Numbers—Data From Oakland, CA," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt0v85242q, Institute of Transportation Studies, UC Berkeley.
    5. Greene-Roesel, Ryan & Diogenes, Mara Chagas & Ragland, David D., 2010. "Estimating Pedestrian Accident Exposure," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt7m97h15t, Institute of Transportation Studies, UC Berkeley.
    6. Bo-Xun Huang & Shang-Chia Chiou & Wen-Ying Li, 2021. "Landscape Pattern and Ecological Network Structure in Urban Green Space Planning: A Case Study of Fuzhou City," Land, MDPI, vol. 10(8), pages 1-23, July.

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