Traffic congestion is the top problem facing the city's transportation infrastructure, a recent survey of 1,700 residents found. But it's a problem that cannot be solved by simply building wider roads ...

We examine the problem of determining an optimal schedule for a fleet of vehicles used to transport handicapped persons in an urban area. The problem is a generalization of the well-known ...

This paper considers a minimum-cost network flow problem in a bipartite graph with a single sink. The transportation costs exhibit a staircase cost structure because such types of transportation cost ...

If your grocery bill starts trending higher, the problem can be traced to the nation’s highways, not the aisles of your local store. A looming transportation crisis threatens to drive up prices on ...