Three routes connect an origin-destination pair with performance functions: t₁ = 20 +0.5x1 t2 = 4+ 2x2 t3=3+0.2x3 with t in minutes and x in thousand vehicles per hour. (a) Determine the User Equilibrium flow on each route if q = 4000veh/h. (b) What is the minimum q (origin-destination demand) to ensure that all the three routes are used under user equilibrium? (c) Suppose that Route 1 is closed for repair. Find the system optimal flow on routes 2 and 3 and compute the total travel times.
Three routes connect an origin-destination pair with performance functions: t₁ = 20 +0.5x1 t2 = 4+ 2x2 t3=3+0.2x3 with t in minutes and x in thousand vehicles per hour. (a) Determine the User Equilibrium flow on each route if q = 4000veh/h. (b) What is the minimum q (origin-destination demand) to ensure that all the three routes are used under user equilibrium? (c) Suppose that Route 1 is closed for repair. Find the system optimal flow on routes 2 and 3 and compute the total travel times.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Three routes connect an origin-destination pair with performance functions:
t₁ = 20 +0.5x1
t2 = 4+ 2x2
t3=3+0.2x3
with t in minutes and x in thousand vehicles per hour.
(a) Determine the User Equilibrium flow on each route if q = 4000veh/h.
(b) What is the minimum q (origin-destination demand) to ensure that all the three routes are used under user equilibrium?
(c) Suppose that Route 1 is closed for repair. Find the system optimal flow on routes 2 and 3 and compute the total travel times.
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