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Sub-problem 1a - Page 4 of 4 Sub-problem 1a: Analysis of the Existing TWSC Intersection
The effects of pedestrians on queue and delay, even LOS, can be dramatic. In this case, delays for the northbound and southbound approaches were increased by hundreds of seconds per vehicle, due to the time blockage (21% on three approaches) created by pedestrians at the stop-controlled approaches. Assuming the geometry and pedestrian volumes remain unchanged for now, we can perform an analysis on the TWSC intersection with projected traffic levels reflecting the additional volumes generated by the new parking structure. The table below provides details on queue, delay, and LOS, comparing the current condition with projected traffic and no improvements to the intersection:
These results suggest that the deficiencies have worsened on the southbound approach due to the increased traffic levels for these movements. Delays listed as 999 seconds per vehicle represent values where parameters, such as the v/c ratios, drive the delay calculation to very high (>999 sec/veh) values. Also notice that the queue estimates for this approach increased from 7 or 8, to 29 and 50. |
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