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 ...