Research Article

A Metro Freight Plan for Mixed Passenger and Freight Transportation

Table 1

Notations.

Index setsSet of metro stations
Set of the goods
Set of metro trains
A large positive number

ParametersNumber of cargo boxes in train
Set of goods should be loaded when the train departs from the station
Originating station of goods
Destination station of goods
Maximum number of cargo boxes in a carriage of metro train
Set of goods loaded at station
Set of goods unloaded at station
The time of loading and unloading each cargo box
Arrival time at station for metro train
Departure time at station for metro train
Arrival time of the last metro train to station
Departure time of goods at the originating station
Arrival time of goods at the destination station
Minimum stop time for metro trains
Maximum stop time of metro trains
Minimum departure time of the metro train at the first metro station
Maximum departure time of the metro train at the first metro station
Departure time of the metro train at station
Minimum headway between metro trains
Running time from station to station
Running distance from station to station
Loading and unloading cost for each cargo box
Operation cost for each cargo box

Decision variables1 if goods is transported by metro train , 0 otherwise.
Stop time of the metro train at station
Departure time interval between metro train and train at the first station