Computer Simulation Of City Traffic In simulating traffic flow on city streets, the National Bureau of Standards has used data processing techniques to tabulate and make motion pictures of vehicle movements in the model. Each vehicle is assigned a digital identification giving points of entry and exit, type of vehicle, desired speed, and actual speed, in proportions simulating field data. Changes in the model can be made to observe their consequences and to determine the ability of a real street to carry loads expected in the future. CACM April, 1962 CA620412 JB March 20, 1978 2:00 PM 605 5 605 605 5 605 605 5 605