Missouri's experience with a diverging diamond interchange : lessons learned.

Details

• Alternative Title:
  DDI lessons learned
• Corporate Creators:
  Missouri. Dept. of Transportation. Design and Traffic Divisions
• Corporate Contributors:
  Missouri. Dept. of Transportation. Organizational Results
• Subject/TRT Terms:
  • Diamond interchanges
  • Signalized intersections
  • Traffic control devices
  • Traffic engineering
  • Roads--Design and construction
  • Roads--Interchanges and intersections
  • Signalized intersections
  • Traffic signs and signals--Missouri
• Publication/ Report Number:
  OR 10 - 021
• Resource Type:
  Tech Report
• Geographical Coverage:
  Missouri
• Edition:
  Fianl.
• Corporate Publisher:
  Missouri. Department of Transportation
• Abstract:
  The first DDI in the nation opened to traffic on June 21, 2009, in Springfield, Missouri. The interchange in ; Springfield where the Kansas Expressway (MO-13) passes over I-44 is a huge success. A diverging diamond ; interchange (DDI), sometimes referred to as a double crossover diamond (DCD), is a diamond interchange ; that more efficiently facilitates heavy left-turn movements. While the ramp configuration is similar to a ; traditional diamond interchange, traffic on the cross route moves to the left side of the roadway for the ; segment between signalized ramp intersections. By moving traffic to the left, left-turning vehicles can enter ; the limited access highway without the need for a left-turn signal phase at the signalized ramp intersections. ; Also, left-turning vehicles on the cross route do not conflict with opposing through traffic and may turn ; without stopping. This report was prepared based upon current knowledge and experience with building and ; operating the nation’s first Diverging Diamond Interchange (DDI). MoDOT’s Engineering Policy Guide ; (EPG) will be updated to reflect current practices as institutional knowledge and experience increases.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18089/dot_18089_DS1.pdf
• File Type:
  [PDF - 24.07 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:1bef86ba23e8e8d3734a2853831f2d12d070da8628ef854ed174696a73c8a745