2. Management of transport systems (30%) A bourough in charge of a city plans to adopt intelligent transportation systems solution to improve travel on their network for two locations A and B. Analysis shows the three alternative routes between the origin-destination pair A-B have travel times which is related to the volume rate of flow (Figure Q2.1). If xi (I = 1, 2, 3) represents the number of vehicles per unit time, the travel times are given by: t₁ =3x+5x1-2 t2=4x-2x21+1 t3 = x²+4 If 100 vehicles per unit time leave A, determine the optimal division of traffic between the three routes so that a) the overall travel times will be minimized b) the total disutility in commuter-hours will be minimized (10%) (10%) c) Based on the results obtained in a) and b), recommend a policy for improving travel in the borough by briefly explaining the reasons for your choice. (10%) X1 X2 X3 B Figure Q2.1 Alternative routes between origin-destination pair A-B 3. Transportation modelling (10%) Briefly discuss how transportation planning is intricably linked with land use planning in urban areas. 4. Transport and the environment (10%) Discuss the main problems related to the sustainability of modern transportation systems and how technology could be used to address them. 5. Presentation (10%) Top marks to be awarded to well-presented submission satisfying all submission requirements.