DCMI (Double Crossover Merging Interchange) Design, Operations, and Application

As traffic demands continue to rise, the need for innovative traffic control devices continues to grow. One method of addressing this need has been the use of less conventional intersection types. Many of these less conventional intersection types have been implemented successfully for many years in various geographic locations throughout the United States and abroad. These less used intersection types are commonly referred to as “Alternative Intersection Control”. New and unique intersection control types are invented to address the growing needs of increased traffic and congestion. This paper presents Double Crossover Merging Interchange (DCMI), a new and unique interchange configuration. The DCMI’s lane configuration and design provides a method of constructing a high capacity interchange with free‐flow operations in a relatively small area, as opposed to the area needs of a full clover leaf interchange, or an interchange with flyovers. The DCMI uses a unique configuration of a main bridge with two minor side‐bridges on either side of it. This allows traffic to crossover the opposing/conflicting traffic streams while eliminating weaving sections and resulting in a lane configuration with primarily merging sections. This paper outlines the key components of the DCMI operations, design, and application, including lane configuration, operational analysis, grade and profile considerations, design speed and curvature of roadway, pedestrian and bicyclist, right of‐way requirements, integrating local access system, wayfinding system, and cost versus benefit and application assessment.


  • English

Media Info

  • Media Type: Web
  • Features: Bibliography; Figures;
  • Pagination: 26p
  • Monograph Title: Managing Operational Performance...Exceeding Expectations. 2012 ITE Technical Conference and Exhibit

Subject/Index Terms

Filing Info

  • Accession Number: 01383620
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 22 2012 10:39AM