Sub-problem 3a: Shenendehowa Campus AM & PM peak - Existing Conditions

A detailed look at the individual 15-minute intervals from Exhibit 2-31 is also instructive. The eastbound through-and-right delays range from 20.8 to 34.9 seconds; the northbound approach delays range from 19.6 to 32.6 seconds; and the westbound lefts range from 28.4 seconds all the way to 51.6 seconds per vehicle. For the rest of the movements, the delays are more consistent. Notice that in all of the interval cases and in the base case, each of the delays is lower than those produced by the analysis done using PHF by movement.

When comparing the original peak hour analyses to each of the 15-minute interval analyses, it is obvious that the actual intersection performance levels are not consistent with the predicted AM or PM peak hour conditions. In the worst 15-minute interval (8:00 to 8:15), the overall LOS is C. For this interval, there are significant increases from the PM peak hour results for the eastbound right, the westbound left, and all three of the southbound movements. Looking at the best performing 15-minute interval (8:30 to 8:45), the overall LOS is B. For this interval there are significant decreases (from the base case) in the delays for the eastbound though-left, the westbound left, and all three northbound movements.