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Proceedings | 2013

Safety Impacts of Access Management: Two Case Studies

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Peter Hsu, P.E.

Florida Department of Transportation

District 7

W. T. Bowman, P.E

Tindale-Oliver & Associates, Inc.

Tampa, FL

Presentation Outline

  • Case Study 1-Nebraska Avenue Lane Diet
    • Before:  4-lane undivided
    • After:  2-lane divided with TWLTL
  • Case Study 2-Hillsborough Avenue Median Installation
    • Before:  6-lane with TWLTL
    • After:  6-lane with raised medians

Case Study 1: Discussion

  • Significant Safety Improvement
  • Improvement of all Analyzed Crash Types
  • From Worse to Better than SW Average
  • Exceeded CRF Expectation
  • Better Parcel Access
  • Did not Significantly Impact Capacity
  • Results May not Be Typical

Case Study 2: Discussion

  • Significant Safety Improvement
  • Improvement of Most Crash Types
  • Still above SW Average (32% improvement)
  • Exceeded CRF Expectation
  • More Controlled Parcel Access
  • Continue to Monitor Bike/Ped
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