Carmel Country Rd. & Carmel Mountain Rd.
San Diego, CA
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BACKGROUND
MTJ Roundabout Engineering was retained to evaluate the feasibility of a roundabout at this commercial, highly constrained intersection.
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SUMMARY
Alternative concepts addressed these key issues:
-Minimize/avoid undesirable ROW impacts to surrounding properties
-Ensure compatibility with existing and/or proposed roadway cross sections, to include ped and bike design features – cycle track and on-street bike facilities
Accommodate necessary design vehicles:
-Large trucks/freight
-Transit and school buses
-Emergency response/fire trucks
Three alternatives were developed to evaluate optimal size/shape and fit with acceptable impacts.
The resulting compact style design allows the central island to retain landscape features that will promote visual conspicuity for this application.
Highlights
Minimized undesirable ROW impacts to surrounding properties
Compatible with existing roadway cross sections, including cycle track
Accommodated large trucks, transit/school buses, emergency response vehicles
Non-circular compact style roundabout

