Multimodal transportation (MMT) refers to a system that utilizes various means of transfer people & goods from one place another. Transit operations are measured as the maximum number passengers can be carried past fixed route, in given period. Investing and using multiple modes does not only bring efficiencies but also goes long way reduce time delay, well overall cost transportation. This...

it is necessary to consider the impact of demand uncertainty to model the comprehensive approach for supply chain network design. this paper presents four echelons, multiple commodity, and strategic–tactical model for designing supply chain network. uncertain demand, transportation mode selection with lead time configuration has been considered. a numerical example has been implemented to verif...

one main group of a transportation network is a discrete hub covering problem that seeks to minimize the total transportation cost. this paper presents a multi-product and multi-mode hub covering model, in which the transportation time depends on travelling mode between each pair of hubs. indeed, the nature of products is considered different and hub capacity constraint is also applied. due to ...

The Braess Paradox is the counterintuitive phenomenon that can occur in a useroptimized network system, such as a transportation network, where adding an additional link to the network increases the cost (travel time) for every user. In electrical circuits, electrons, analogous to drivers in a transportation network, traverse the network so that no electron can unilaterally change its cost (vol...