Sub-problem 4b: Two-way Stop Controlled Analysis

Step 2. Results

The results of this analysis are presented in Exhibit 3-30. These results reaffirm the conclusions drawn from sub-problem 4a, specifically that TWSC is not a viable control alternative. The v/c ratio for the NBL movement was 3.72, i.e., the volume was 372% of the capacity. The NBR movement v/c ratio was 1.92.

The WBL movement, on the other hand, appears to be operating within its capacity, with a v/c ratio of 0.71. This presents an interesting contrast with the NBL movement, since both movements have to contend with the same conflicting volume (i.e., 2,010 vph from the WBT). The difference may be seen in both the graphical representation of Exhibit 3-27 and the numerical presentation on Exhibit 3-. In the graph, the line representing the WBL shows a much higher capacity for a given level of opposing volume than the line representing the NBL movement.

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