IDEAS home Printed from https://ideas.repec.org/a/eee/trapol/v163y2025icp262-272.html
   My bibliography  Save this article

Examining the effect of relative improvements in road mobility versus accessibility on the fatality-to-injury ratio: Insights from income as an intermediate variable

Author

Listed:
  • Sirajudeen, Abdurrasheed Olayinka
  • Law, Teik Hua
  • Wong, Shaw Voon
  • Ng, Choy Peng

Abstract

Over the past two decades, several studies have shown that the development of road infrastructure significantly reduces road crashes. However, these studies often treated all roads as a single category. In reality, roads can be classified based on their mobility and accessibility. In a recent empirical study, a U-shaped relationship was identified between the road death-to-injury (DTI) ratio and the road mobility-to-accessibility (MTA) ratio. This finding suggests that as the availability of road options increases (encompassing both high-mobility and high-accessibility roads), the DTI ratio decreases. Conversely, in situations with fewer road options, the DTI ratio tends to rise. The underlying reasoning is that more road options reduce the potential for vulnerable and less vulnerable modes of transportation to mix and interact with, improving overall safety. While prior research has examined the direct impact of MTA on the DTI ratio, there exists a gap in understanding the indirect impact of MTA to the DTI ratio. This study utilizes two-equation panel regression models to examine the direct and indirect impacts of MTA on the DTI ratio. The direct impact examines how MTA directly influences the DTI ratio, whereas the indirect impact explores how MTA impacts economic performance through export-led development and the subsequent influence of economic performance on the DTI ratio. The results of this study showed that there is a direct and indirect relationship between the MTA and the DTI ratio. The expected threshold level of the total impact of MTA, which is the sum of its direct and indirect impacts on the DTI ratio, can rise or fall depending on economic performance levels under high export-led growth conditions. The findings provide useful information about future strategies for developing road infrastructure, which can aid in achieving long-term road safety goals.

Suggested Citation

  • Sirajudeen, Abdurrasheed Olayinka & Law, Teik Hua & Wong, Shaw Voon & Ng, Choy Peng, 2025. "Examining the effect of relative improvements in road mobility versus accessibility on the fatality-to-injury ratio: Insights from income as an intermediate variable," Transport Policy, Elsevier, vol. 163(C), pages 262-272.
    • Handle: RePEc:eee:trapol:v:163:y:2025:i:c:p:262-272
    DOI: 10.1016/j.tranpol.2025.01.013
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0967070X25000137
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.tranpol.2025.01.013?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    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:eee:trapol:v:163:y:2025:i:c:p:262-272. 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.

    We have no bibliographic references for this item. You can help adding them by using 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: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/wps/find/journaldescription.cws_home/30473/description#description .

    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.