Problem 6: Other
Intersection Configurations for Okeechobee Road

Printable Version

The previous two problems in this case study assumed that the
intersection of Krome Avenue and Okeechobee Road would retain the form of a
conventional at-grade intersection. This final problem examines two
alternative intersection configurations:

Sub-problem 6a:
Here we will consider the feasibility of conversion to a roundabout, using the
analysis procedures suggested in HCM Chapter 17.

Sub-problem 6b: Here we will examine
the effects of removing the high volume conflict points by the installation
of a grade-separated flyover.

This problem
differs from the previous five problems in the sense that the alternative
configurations were not actually included in the study performed for the
operating agency. The operating agency was able to rule out any interest in
either of the alternative configurations based on criteria other than
capacity considerations. So, Problem 6 is more or less hypothetical in
nature. It is included in this case study to illustrate how the HCM
procedures might be applied if there were an interest in constructing either
a roundabout or a flyover at this location.

Discussion:

Consider
the scenarios that will be analyzed in this problem. Take a few minutes to
consider constraints that may have excluded these alternatives from further
analysis by the operating agency. When you are ready to continue, click the
link below to proceed.