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Sub-problem 2b - Page 4 of 10 |
ID# C402B04 |
Sub-problem
2b: What are the Levels of Service
in the Weaving Sections Located in the I-87/Alternate Route 7 Interchange?
The New York State Department of Transportation has a
program of continuous traffic counting for most freeways and highways in the
state. Data gathered from the permanent count stations located on the
interchange were used to identify the morning and afternoon peak hour for
the entry and exit points at the weaving sections, identified as points A,
B, C, and D in Exhibits 4-24, 4-25, and 4-26 below. From these entry and exit counts,
local traffic engineers estimated the origins and destinations for the
weaving sections based on their knowledge of local traffic flow conditions. Sometimes you will have actual origin-destination movements for a weaving
section, but other times, as for this sub-problem, you will need to estimate
the weaving flows based on your knowledge of local conditions.
Exhibit 4-23 shows the origin and destination data that
were estimated for the three weaving sections.
Exhibit 4-23. NYSDOT Origin and Destination Data |
VolumeFROM/TO |
vAC |
vAD |
vBC |
vBD |
Weave A - AM peak |
415 |
178 |
336 |
783 |
Weave A - PM peak |
321 |
138 |
520 |
1,212 |
Weave B - AM peak |
658 |
987 |
551 |
0 |
Weave B - PM peak |
1,752 |
2,629 |
1,066 |
0 |
Weave C - AM peak |
0 |
2,420 |
1,150 |
1,150 |
Weave
C - PM peak |
0 |
1,067 |
825 |
825 |
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