First page Back Continue Last page Overview Graphics
Mass Transit Optimization Model Elements
Modeled as an inventory problem
Station nodes with quantities of passengers, vehicles
Links between connected stations with quantities of passengers & vehicles in transit
Passengers: grouped in bins by common current and final destinations
Vehicles: multiple types with different capacities, station connectivity, and operating costs
Notes:
Very few modeling elements:
Inventory flow problem
buckets of sand analogy – solves for how many buckets move to support desired flow of sand
Passengers arrive and depart at stations; can flow freely through the network provided vehicles are there to carry them.
Segments indicate time and not distance; transit graphs do not indicate geophysical layout of network
Multimodal: each vehicle type gets a completely new transit layer and network
Different size vehicles
Separate tracks/roads
Different operating costs