Sub-problem 4a - Page 2 of 4 |
ID# C404A02 |
Sub-problem 4a: Division
of Alternate Route 7 for Analysis
It is important that the
time and space domain we establish includes time intervals during which any congestion or
overcapacity may occur. For example, if the demand exceeds the capacity
of a section for one 15-minute period, we need to continue the analysis for
another time period in order for all of the demand to be served. In
addition, we need to make sure that the overall length of the facility is
such that vehicles are normally able to travel from one end to the other
within 15 minutes, again so that all demand can be served during the study
period. Finally, the facility should be long enough to contain any queues
that form and to ensure that there are no traffic interactions with any
upstream facility.
Now let's get started on this sub-problem and see how we
can use these guidelines to analyze Alternate Route 7. Exhibit 4-63 shows
line drawings of both the eastbound and westbound alignments of Alternate
Route 7, from the I-87 interchange on the west to the I-787 interchange on
the east.
Study Exhibit 4-63 to better familiarize yourself with the components
of this facility.
Discussion:
Consider the
information presented in the line drawings above showing some of the
geometric characteristics of Alternate Route 7. After reviewing the information
included in the drawings, list the segments that you think should be
analyzed. When you are ready, proceed to the next page.
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