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Sub-problem
5a: I-87 Interchange - Merges and Diverges on the Freeway
Northbound
Off-Ramp
Exhibit 2-57 shows the performance of the northbound off-ramp under a variety of PM
Peak conditions. The volumes are heavier in the PM peak. The second lane
makes a difference. The delays with a single lane are more than
twice those of the double lane. You can click here to see the datasets.
The datasets reflect two lanes. Changing from 2 to 1 will provide the
results for a single lane exit.
|
Exhibit 2-57. I-87 Interchange Northbound Off-Ramp |
|
Case |
#
Lanes |
Density |
Speed |
LOS |
| PM Existing |
1 |
23.2 |
52 |
C |
| PM Existing |
2 |
9.3 |
52 |
B |
| PM Without |
1 |
24.1 |
52 |
C |
| PM Without |
2 |
10.2 |
52 |
B |
| PM With |
1 |
24.1 |
52 |
C |
| PM With |
2 |
10.2 |
52 |
B |
with
Sub-problem 5a |