3.0/6.0 points (graded) Peak-hour traffic demand between an origin and destination pair is initially 3500 veh/h. The two

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3 0 6 0 Points Graded Peak Hour Traffic Demand Between An Origin And Destination Pair Is Initially 3500 Veh H The Two 1 (108.6 KiB) Viewed 35 times

3.0/6.0 points (graded) Peak-hour traffic demand between an origin and destination pair is initially 3500 veh/h. The two routes connecting the pairs have performance functions t1​=2+3c1​x1​​ and t2​=4+2c2​x2​​, where the times t1​ and t2​ are in minutes and the flows x1​ and x2​ and capacities c1​ and c2​ are in thousands of vehicles per hour. Initially, the capacities of routes 1 and 2 are 2500 and 4000 veh/h. A reconstruction project reduces capacity on route 2 to 2000 veh/hr. What is the flow x1​ (in thousands of vehicles) on route 1 before the reconstruction? 103 vehs Assuming user equilibrium before and during reconstruction, which proportion of the total demand should be diverted (or removed) to ensure that travel times during reconstruction are equal to those before reconstruction?