Sub-problem 5a - Page 7 of 7
5a: I-87 Interchange - Merges and Diverges on the Freeway
Exhibit 2-59 shows the performance of the westbound-to-northbound on-ramp
during the PM Peak. The density in the influence area ranges from 19.5 to
20.8 pcpmpl and the speed is between 57.4 and 57.6 mph. The LOS is
borderline B/C. A change in letter grade (from B to C) may infer a dramatic change, but the delays change very little. You can click
here to see the datasets.
conclusion we draw from these analyses is that none of the ramps is
problematic, at least as far as the freeway merge and diverge points are
concerned. We’ll see later that there are problems elsewhere.
I-87 Interchange Westbound-to-Northbound On- Ramp
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