Problem 3 - Page 1 of 1
Problem 3: Analysis of oversaturated
U.S. 95/Styner-Lauder Avenue Intersection
In the two previous problems, we considered traffic volumes
only for the afternoon peak period. This allowed us to focus on several
important issues relating to the application of the signalized and unsignalized
intersection procedures of the Highway Capacity Manual. In problem 3, we
recognize that there are other time periods and traffic conditions that also
need to be considered. Just as we learned more about the signalization decision
when we considered the U.S. 95 corridor and the related system issues beyond the single intersection of U.S. 95/Styner-Lauder Avenue, we will see that there is more to learn about the
variation in traffic volumes, providing us with an even better perspective on the signalization decision.
The University of Idaho has a number of special events during
the year that attract large crowds to its sporting arenas and performing arts
venues. During these periods, demand often exceeds capacity along the U.S.
95 corridor in ways that do not happen during normal weekday periods. What tools are needed to assess the operation of the
U.S. 95 corridor in general
and the intersection of U.S. 95/Styner-Lauder Avenue in particular?
And what analytical issues must be faced when demand exceeds capacity at a
traffic facility? In sub-problem 3a, we will use the
HCM methodologies to determine the level of service of the intersection under
these high volume conditions. In sub-problem 3b, we will use a microscopic simulation model to assess these conditions.
Finally, in sub-problem 3c, we will use
another method, critical movement analysis, to determine whether the
intersection can accommodate the demand during these high volume events. These
sub-problems will address the following issues: