This body of work was motivated by my earlier interests in managing reactive behavior (part of a continuation of my MS thesis in the direction of formalizing Active Databases) - with a specific intent to minimize the "transient response time" when re-evaluating multiple (pending) queries in MOD settings. The reason for this was based on the observation that in real-life scenarios, a perturbation (e.g., an accident, blockage due to road-work or sport/concert even) pertaining to relatively small area, may generate disturbancies in the traffic patterns - consequently, the queries answers - in much wider region.