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+3 and t₂ = 4+222, where the times t₁ and t₂ are in minutes and the flows 1 and 2 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? 2.206 2.206 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? →X544 is wrong 644 10³ vehs ✔ 644 X

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+3 and t₂ = 4+222, where the times t₁ and t₂ are in minutes and the flows 1 and 2 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? 2.206 2.206 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? →X544 is wrong 644 10³ vehs ✔ 644 X

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter12: Forecasting Travel Demand

Section: Chapter Questions

Problem 27P

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