Sub-problem 2b - Page 1 of 10

ID# C402B01

Sub-problem 2b: What are the Levels of Service in the Weaving Sections Located in the I-87/Alternate Route 7 Interchange?

Step 1. Setup


Exhibit 4-20. Weave A	Exhibit 4-21. Weave B	Exhibit 4-22. Weave C

In this sub-problem, we will consider the three weaving sections that are part of the I-87/Alternate Route 7 interchange and determine the quality of service that is provided to drivers traveling through these sections. These weaving sections, shown in Exhibits 4-20, 4-21, and 4-22, are classified as Type A weaves.

As we begin this sub-problem, consider these questions:

	What type of analysis will produce an evaluation of traffic conditions present at the weaving sections?
	What data are needed to analyze the operations of these weaving sections?
	What are the limitations of the models used to analyze the performance of a weaving section?
	Why are these weaving sections considered to be Type A weaves?
	What measures of effectiveness are used to evaluate the performance of a weaving section?
	What is meant by the terms "constrained operation" and "unconstrained operation?"

Discussion:
Take a few minutes to consider these questions. When you are ready, continue to the next page.

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