Mobility Investment Priorities Project: Safety Assessment of Interstate 35 Austin, Texas (Travis County)

Safety assessment for a roadway corridor has primarily focused on the evaluation of recent crashes with particular attention directed to “hot spots”—locations where crashes have occurred in close proximity to each other. For high traffic volume locations, there is a need to better understand the influence of congestion on the overall corridor safety performance. In addition to the evaluation of the total number of crashes that occur each year, more reliable conclusions can be extracted by examining the crash trends for more than one year and by evaluating fatal and injury crashes in addition to total crashes. This analysis examines the Interstate 35 (IH 35) corridor in Travis County (Austin, Texas, metropolitan region) beginning at the Hays/Travis County line (SH 45 Southeast) at the south end and extending to Louis Henna Boulevard (immediately south of State Highway 45) to the north. To comprehensively assess safety along the IH 35 corridor, the analysis included a summary of descriptive statistics, traditional network screening (using the sliding window approach), predictive modeling as a mechanism for identifying over-represented crash locations, and secondary crash assessment techniques. These analyses provide insights into key safety issues on IH 35 in Travis County and collectively provide a valuable and robust methodology to identify locations where future safety enhancement efforts should be focused.

  • Record URL:
  • Supplemental Notes:
    • Title page: Establishing Mobility Investment Priorities Under TxDOT Rider 42: Safety Assessment of Interstate 35, Austin, Texas (Travis County).
  • Corporate Authors:

    Texas A&M Transportation Institute

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Authors:
    • Dixon, Karen
  • Publication Date: 2013-9


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 78p

Subject/Index Terms

Filing Info

  • Accession Number: 01529422
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 5 2014 3:53PM