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Sub-problem 3b - Page 1 of 1

ID# C203B01

Sub-problem 3b: Shenendehowa Campus PM peak - With Conditions

Traffic Growth and Sensitivity
The PM With condition is a 2004-forecasted condition that considers the impacts of the traffic generated by the Maxwell Drive site development. As we move further from the actual site development, the impact of the site-generated traffic diminishes. We’ve seen the impacts at Maxwell Drive and Moe Road. Let’s now look at the impacts of this site-generated traffic at the current intersection.

The volumes that will be used to analyze the 2004 PM With and PM Without conditions are shown in Exhibit 2-34. There is a small estimated growth on the eastbound through movement, and the westbound through movement and the rest of the movement volumes are unaffected by the site development. For the input datasets click here. 
 
Exhibit 2-34. Shenendehowa Campus Forecasted 2004 PM peak hour volumes 
Condition Eastbound Westbound Northbound Southbound Intersection Total
L T R Tot L T R Tot L T R Tot L T R Tot
2004 PM Without 0 801 78 879 117 859 2 978 129 2 224 355 9 0 3 12 2,224
2004 PM With 0 869 78 947 117 927 2 1,046 129 2 224 355 9 0 3 12 2,360
2004 PM With +30% 0 890 78 968 117 948 2 1,067 129 2 224 355 9 0 3 12 2,402

Exhibit 2-35 shows what we find from analyzing each of these three conditions. Comparing the with and without conditions, the changes in overall delay are quite small. To check the robustness of this comment (i.e., the sensitivity to uncertainty in the site development volumes), we looked at an additional with condition with 30% more site-generated traffic. The delays still have not changed much. This tells us that this intersection is not significantly affected by the site development at Maxwell Drive. 

Exhibit 2-35. Shenendehowa Campus Growth and Sensitivity Analysis Results
Dataset Condition HV Correct Cycle Length Performance Measure EB WB NB SB OA
L T R Tot L T R Tot L T R Tot L T R Tot
31 PM 2004 Without Yes 52.0 Delay 25.9 7.7 24.3 25.5 14.1 15.5 20.0 24.7 23.0 17.2 17.2 20.2
95-Queue 25.6 1.5 - 3.1 23.0 - 3.9 7.2 - 0.3 - -
Queue 14.4 0.7 - 1.5 12.8 - 1.9 3.6 - 0.2 - -
32 PM 2004 With Yes 55.0 Delay 28.7 7.2 26.9 27.3 14.1 15.6 22.0 28.5 26.1 18.7 18.7 21.7
95-Queue 29.8 1.5 - 3.3 25.5 - 4.2 7.8 - 0.3 - -
Queue 17.2 0.7 - 1.6 14.4 - 2.1 3.9 - 0.2 - -
33 PM 2004 With +30% Yes 56.0 Delay 29.3 7.1 27.5 27.8 14.1 15.6 22.7 29.8 27.2 19.2 19.2 22.2
95-Queue 31.1 1.5 - 3.4 26.3 - 4.3 8.0 - 0.3 - -
Queue 18.1 0.7 - 1.6 15.0 - 2.1 4.0 - 0.2 - -

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