Modelling dual-carriageway traffic behaviour as a complex system: A proposal for discussion.
When the initial investigation into both single lane and multiple lane models had been expanded out for a large number of cars, the question arose is the solution of this system in time a NP-hard problem After studying the results section, there seems to be no shortcut or smart algorithm that would lead to a simple or rapid solution of this system involving many interacting and communicating elements that would represent traffic with sufficient accuracy. Instead, it is thought, the only way to find a global optimal solution which is the spread of driver distributions to achieve the shortest global transit times, over many runs of the system, is a computationally-intensive, exhaustive analysis. A global optimum solution as it refers to this model is the solution that would allow for all the cars to progress through the network at the shortest possible time. This is the time for a specific number of cars to travel through the network.