IDEAS home Printed from https://ideas.repec.org/p/cdl/itsrrp/qt5498x882.html
   My bibliography  Save this paper

The Continuing Debate about Safety in Numbers—Data from Oakland, CA

Author

Listed:
  • Geyer, Judy
  • Raford, Noah
  • Ragland, David
  • Pham, Trinh

Abstract

The primary objective of this paper is to review the appropriate use of ratio variables in the study of pedestrian injury exposure. We provide a discussion that rejects the assumption that the relationship between a random variable (e.g., a population X) and a ratio (e.g., injury or disease per population Y/X) is necessarily negative. In the study of pedestrian risk, the null hypothesis is that pedestrian injury risk is constant with respect to pedestrian volume. This study employs a unique data set containing the number of pedestrian collisions, average annual pedestrian volume, average annual vehicle volume, and physical intersection characteristics for 247 intersections in Oakland, California. We use a GLM to estimate the expected injury risk given average annual pedestrian volume and other explanatory variables. Consistent with studies by Leden, Ekman and Jacobsen, the null hypothesis is rejected. Indeed, the risk of collision for pedestrians decreases with increasing pedestrian flows, and it increases with increasing vehicle flows. We also find that pedestrians are more likely to be struck by motorists in commercial and mixed areas than in residential areas.

Suggested Citation

  • 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.
  • Handle: RePEc:cdl:itsrrp:qt5498x882
    as

    Download full text from publisher

    File URL: https://www.escholarship.org/uc/item/5498x882.pdf;origin=repeccitec
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. 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.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. González, Silvia R. & Loukaitou-Sideris, Anastasia & Chapple, Karen, 2019. "Transit neighborhoods, commercial gentrification, and traffic crashes: Exploring the linkages in Los Angeles and the Bay Area," Journal of Transport Geography, Elsevier, vol. 77(C), pages 79-89.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. 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.
    2. 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.
    3. 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.
    4. 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.
    5. 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.

    More about this item

    Keywords

    Engineering; safeTREC;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:cdl:itsrrp:qt5498x882. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Lisa Schiff (email available below). General contact details of provider: https://edirc.repec.org/data/itucbus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.