Computer-aided train dispatch

The S-train system: Synchronized express & local trains for urban commuter rail systems

“…To minimize passenger travel time to the least overall, passengers should be onboard an express train at all stations which can be modeled by applying b n =1 and x n =1/ max to (5). Considering the worst case in which passengers stay onboard a local train at all stations, the passenger travel time can be calculated by which b n =0 and x n =1 for (5).…”

“…Also, passengers must transfer to a local train if their destinations are local stations. Because express trains only stop at the specified express stations, combining onboard express and local train service to minimize travel time of a given trip can be modeled with (4) and (5). Passengers who intend to travel in the least available time should search for an optimal way of boarding on express or local trains in the line; search for an optimal path of traveling by express or local trains.…”

“…Considering the worst case in which passengers stay onboard a local train at all stations, the passenger travel time can be calculated by which b n =0 and x n =1 for (5). The worst case may be considered as equivalent to the conventional system in which only local trains are operated for local stations, the total travel time can be computed by (2).…”

“…Intelligent transportation system technology to improve the safety, capacity, rapid operations, and economical operations of subway systems has recently become of interest to researchers [5]- [10]. Subway system operators have focused on improving management of the system by more frequently scheduling trains to meet peak demand, based on ridership statistics [3], and by more efficiently dispatching express trains that pass through stations for long range travel [4].…”