In order to discuss the different problems, models and solution
methodologies, we group the operational planning literature under
two main topics: resource management and itinerary replanning.
Resource Management problems deal with the distribution of all resources
throughout the network: positioning, repositioning, storing,
and allocating them to customer orders. Itinerary Replanning
problems are focused on real-time optimization of schedules, modal
routes, and relevant response to operational disturbance. Resource
management and itinerary replanning problems are in
practice intertwined and act as two components of a bigger operational
planning problem. In the followings, for each group, we discuss
the recent developments on modeling and solution methods.