JUSTIFICATION OF U-TURNS AT FREEWAY INTERCHANGES

THE IMPROVEMENT TO TRAFFIC SERVICE RESULTING FROM THE INSTALLATION OF U-TURN LANES BETWEEN FRONTAGE ROADS AT A DIAMOND INTERCHANGE WAS INVESTIGATED. FIELD STUDIES WERE CONDUCTED TO DETERMINE THE VEHICULAR DELAY USING A BEFORE AND AFTER STUDY AND COMPARISON OF SEVERAL EXISTING INSTALLATIONS. DESIGN CONSIDERATIONS WHICH WOULD PROVIDE THE CAPABILITY OF ADDING SUCH LANES ON A STAGE CONSTRUCTION BASIS ARE DISCUSSED. THE RESEARCH INDICATES THE NEED FOR A COMPREHENSIVE ANALYSIS OF THE SIGNALIZATION OF THESE INTERCHANGES TO PROVIDE FOR MAXIMUM UTILIZATION OF EXISTING CAPACITY. /BPR/

• Supplemental Notes:
  • Hpr, State 2-8-61-24
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  Texas State Department of Highways & Public Transp

  11th and Brazos Streets
  Austin, TX  United States  78701
• Authors:
  • Wilson, S L
  • Radke, M L
• Publication Date: 1967-1-23

Subject/Index Terms

• TRT Terms: Before and after studies; Building; Construction management; Diamond interchanges; Facilities; Field studies; Freeways; Frontage roads; Improvements; Installation; Interchanges; Motorist aid systems; Traffic lanes; U turns
• Uncontrolled Terms: Stage construction
• Old TRIS Terms: Highway user services; Lanes
• Subject Areas: Construction; Highways; Maintenance and Preservation; Operations and Traffic Management;

Filing Info

• Accession Number: 00224840
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Feb 24 1994 12:00AM