Problem 3 - Page 1 of 1
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**Problem 3: Signal Timing Analysis of Rietz Union
Drive/Museum Road**
In Problem 2 we explored signalization of the Rietz Union
Drive/Museum Road intersection with development of the parking garage,
including various phasing plans and cycle length mitigations to reduce both
vehicular and pedestrian delay.
Several assumptions were made regarding the signal timing
parameters at the intersection which simplified our analysis. In this
sub-problem, we will further explore those assumptions and the effect that
changes to these parameters have on the intersection performance.
We will also explore the extent that a local jurisdiction's
operational requirements have on the actual performance of an
intersection. In this instance, we will explore the effect of various signal
timing parameters on volume to capacity ratio and how this relates to signal
timing within the signal controller.
In this problem, consider the following issues as
you work through the computations for the three sub-problems:
| What is the effect of coordinated operations at an
intersection? |
| What does a corridor with a low volume to capacity
ratio look like in the field and how does various detector timing
parameters affect the operations? What does this look like in the field? |
| What are the various ways to optimally distribute green
time at an intersection? |
| What is the effect on other users of the signalized
intersection (pedestrians, transit, etc)? |
This problem illustrates some of the important elements
regarding the differences between HCM operations analysis methodologies and
results and field operations. The problem is separated into three
sub-problems:
Sub-problem 3a: Actuated Signal Detection and Signal
Timing
Sub-problem 3b: Software Analysis Techniques and Implications of Calculation
Techniques on v/c ratio
Sub-problem 3c: Effects of Pedestrians on Signal Timing, Pedestrian Delay
*Discussion:*
Consider
what it means for a movement to operate at a volume to capacity ratio of
0.80 in terms of intersection efficiency. What might a volume to capacity
ratio of 0.80 look like in the field? Consider this question. When you are ready to continue, click the
link below to proceed.
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Continue ] to Sub-problem 3a |