Skip to main navigation Skip to search Skip to main content

Geocoding vehicle collisions on Korean expressways based on postmile referencing

  • Shin Hyoung Park
  • , John M. Bigham
  • , Seung Young Kho
  • , Seungmo Kang
  • , Dong Kyu Kim*
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Geocoding is the process of assigning latitude and longitude coordinates to data that contain spatial information. Geocoded records of motor vehicle collisions are an invaluable resource for injury prevention researchers. The objective of this study is to apply the postmile referencing system for geocoding collisions on Korean expressways and summarize the methodology and results with comparative research efforts in the USA. A street network provided by Korea Expressway Corporation was cleaned and calibrated using ArcGIS and a customized Visual Basic for Applications (VBA) tool. Geocoding via postmile referencing was determined to develop the most appropriate methodology for Korean expressways. A database of expressway collisions from 2003 to 2008 was geocoded, and 24,854 out of 24,879 (99. 9%) collisions were successfully matched to the street network. This study established an effective methodology for geocoding collisions on Korean expressways. Future research will benefit from the development of a street network that can be updated over time to incorporate newly constructed roads. The methods for street network cleaning and error checking and the use of linear referencing to geocode collisions are easily transferable to highway networks in other countries. The geocoded database of expressway collisions can be used for numerous traffic safety improvement programs and help reduce fatalities.

    Original languageEnglish
    Pages (from-to)1435-1441
    Number of pages7
    JournalKSCE Journal of Civil Engineering
    Volume15
    Issue number8
    DOIs
    Publication statusPublished - 2011 Nov

    Bibliographical note

    Funding Information:
    This work was supported by National Research Foundation of Korea Grant funded by the Korean Government (2009-0075811). The generous support from the Engineering Research Institute of Seoul National University, Korea Expressway Cor- poration, and Safe Transportation Research & Education Center at U.C. Berkeley is also gratefully acknowledged. The opinions expressed in the paper, however, are solely of the authors and do not necessarily reflect the opinions of the respective agencies. The authos also thank the anonymous referees who reviewed an earlier version of this manuscript for their constructive and helpful comments.

    Keywords

    • expressway collisions
    • geocoding
    • linear referencing
    • postmile markers
    • traffic safety

    ASJC Scopus subject areas

    • Civil and Structural Engineering

    Fingerprint

    Dive into the research topics of 'Geocoding vehicle collisions on Korean expressways based on postmile referencing'. Together they form a unique fingerprint.

    Cite this