Application of roundabouts on Trinity Dr. and East Rd.: imagining a likely outcome

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To here, we've discussed intrinsic roundabout pros and cons and looked at the performance of the existing roundabout at San Ildefonso and Diamond. Now, in the light of that information and the priorities presented at the outset, we'll try to predict the most likely scenario to arise from application of roundabouts to the NM502 corridor. Links in this section will take you back to review earlier content, if you wish.

Recall the priorites for an arterial road:

Highest priority: move motor vehicle traffic
  • Efficiency
  • Availability
  • Safety
Lower priorities: everything else
  • Comfort and convenience
  • Other transit modes
  • Environmental features

We'll address the three most important first, then say a word or two about the lower priorities.

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