The VIPAFLEET project consists in developing models and algorithms for managing a fleet of Individual Public Autonomous Vehicles (VIPA). Hereby, we consider a fleet of cars distributed at specified stations in an industrial area to supply internal transportation, where the cars can be used in different modes of circulation (tram mode, elevator mode, taxi mode). One goal is to develop and implem...

A three-level relief chain including a number of suppliers in fixed locations, candidate distribution centers and affected areas at certain points are considered. A mixed integer nonlinear programming model is proposed for open transportation location routing problem by considering split delivery of demand. To solve a realistic problem, foregoing parameters are considered as fuzzy in our propos...

The transportation sector is a complex system. Collecting transportation activity and the associated emissions data is extremely expensive and time-consuming. Grey Relational Analysis provides a viable alternative to overcome data insufficiency and gives insights for decision makers into such a complex system. In this paper, we achieved three major goals: (i) we explored the inter-relationships...

At the closing of the second millennium our civilization can boast a remarkable progress in technological developments which have been growing at an exponential pace. Telecommunications, jumbo-jets and personal computers have become ubiquitous in many countries in recent decades. In the "softer" area of managing complex systems, and even more so in economic, social and ethical aspects, our achi...

N A T IO N A L T R A N S P O R T A T IO N SAFETY BO ARD The National Transportation Safety Board was established by Congress in the Department of Transportation Act of 1966. The safety board’s basic functions include the investigation of major trans­ portation accidents in all modes of transportation and the execution of special studies of safety problems which influence casualties in trans­ po...

Integrating passenger and freight flows creates attractive business opportunities because the same transportation needs can be met with fewer vehicles and emissions. This paper seeks an integrated solution for the transportation of passenger and freight simultaneously, so that fewer vehicles are required. The newly introduced problem concerns scheduling a set of vehicles to serve the requests s...

A framework is presented which may be used to analyze and evaluate intermodal networks. An intermodal network can be defined as an integrated transportation system consisting of two or more modes. Modes on intermodal networks are connected through facilities which allow travelers and/or freight to transfer from one mode to another during a trip from an origin to a destination. The model may be ...