Sub-problem 3a: Weaving Analysis
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| Figure 2. Scenario 1 weaving diagram |
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| Figure 3. Scenario 2 weaving diagram |
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| Figure 4. Scenario 3 weaving diagram |
In the first scenario let’s see what happens if we assume that none of the traffic entering on the 23rd Street on-ramp goes to Rte. 7 eastbound. In other words all of the Rte. 7 eastbound off-ramp traffic is associated with a weave from I-787 northbound. The weaving diagram for this scenario is shown in Figure 2.
In the second scenario, let’s see what happens if the percentages of the volumes going to C and D (from A and B) are proportional to the volumes exiting at C and D. Approximately 23% of the total exiting volume goes to Rte. 7 eastbound while 77% goes to I-787 northbound. Therefore in this case, the volume exiting at Rte. 7 eastbound would be comprised of: 23% of the entering I-787 northbound flow and 23% of 23rd Street on-ramp flow. The weaving diagram for this scenario is shown in Figure 3.
In the third case let’s examine what happens if the percentage of vehicles entering at 23rd Street and exiting at Rte. 7 eastbound is increased from 23% to 40%. The weaving diagram for this scenario is shown in Figure 4.