Rymill, Stephen J.Dodgson, Neil A.Louise M. Lever and Mary McDerby2014-01-312014-01-3120053-905673-56-8https://doi.org/10.2312/LocalChapterEvents/TPCG/TPCGUK05/035-042We describe a system designed to simulate human behaviour in crowds in real-time, concentrating particularly on collision avoidance. The algorithms used are based heavily on psychology research, and the ways this has been used are explained in detail. We argue that this approach gives better results than conventional methods, and detail further work to be done.