Safety and Economic Impacts of Converting Frontage Roads from Two-way to One-way Operation: Preliminary Findings

• Authored by:  William L. Eisele
• Co-authored by:  Christine E. Yager , Eun Sug Park , Marcus Brewer , Dominique Lord , James Robertson , Pei-fen Kuo
• Event:  2010 National Conference on Access Management

Project Objectives

• Develop accurate information to communicate types of:
• Safety impacts
• Accident Modification Factors
• Economic impacts

Background

• Frontage roads
  • Start two-way (in rural)
• Conversion “pressures”
  • Land development
  • Increased traffic volumes, signal operation

Survey Recommendations

• Complete conversions as quickly as possible
• Construct support infrastructure before the conversion
  • Improvements at existing interchanges
  • New interchanges
• Identify opportunities for property access (cross access, shared access, alternate streets) before conversion
• Others (see Robertson poster)