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Computer graphics for transportation problems

The central problem in designing transportation systems and networks is determining the optimal control techniques for given transportation facilities. For example, it is essential to find the best strategy for handling the traffic in a given airspace, in a given highway system, or in a network of city streets. The other side of the problem is to determine for given or predicted traffic conditions, the optimal transportation facilities. Urban planners must solve these problems when designing new developments; similarly it is important to determine how many airways and airports will be required to handle the air traffic in the 80's. From the answers to such questions one can decide how to allocate funds, for example, to improve the radar systems to allow smaller separation or to put more navigation aids in order to increase the number of airways.