1. A commuter bus route, with 20 stops and 10 km service distance in each direction,...

 

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1. A commuter bus route, with 20 stops and 10 km service distance in each direction, is operated from 5 am to midnight from the suburbs to the CBD. The cruising speed is 25 km/hr, and each stop imposes a constant delay of 30 seconds. The service headway is 10 min during the rush hours (7 am - 9 am, and 3 pm - 7 pm), and 30 min for the remainder of the service period. (a) Please draw the cumulative bus dispatch curve and return curve D(t), R(t). (b) Determine the minimum fleet size M needed to serve this route. The agency is also running a recreational shuttle route that shares the same terminal at the CBD. It is operated from 6 am to 8 pm, with 15-min headway during 8 am - 4 pm, and 45- min headway otherwise. The route has no intermediate stops, with a service distance of 15 km each way, and a 10 min waiting time for passengers at either end of the route. (c) Determine the minimum fleet size to serve this recreational shuttle route alone. (d) If the same pool of fleet is used for the two routes, what is the minimal fleet size? 1. A commuter bus route, with 20 stops and 10 km service distance in each direction, is operated from 5 am to midnight from the suburbs to the CBD. The cruising speed is 25 km/hr, and each stop imposes a constant delay of 30 seconds. The service headway is 10 min during the rush hours (7 am - 9 am, and 3 pm - 7 pm), and 30 min for the remainder of the service period. (a) Please draw the cumulative bus dispatch curve and return curve D(t), R(t). (b) Determine the minimum fleet size M needed to serve this route. The agency is also running a recreational shuttle route that shares the same terminal at the CBD. It is operated from 6 am to 8 pm, with 15-min headway during 8 am - 4 pm, and 45- min headway otherwise. The route has no intermediate stops, with a service distance of 15 km each way, and a 10 min waiting time for passengers at either end of the route. (c) Determine the minimum fleet size to serve this recreational shuttle route alone. (d) If the same pool of fleet is used for the two routes, what is the minimal fleet size?