This is true when the network is large and there is high level of connectivity between links. The program may appear to crash – it hasn’t; it just takes a long time to find the downstreams. The algorithm that finds the downstreams has been rewritten and is included in TRANSYT 12 AC, which was released as a maintenance update in June 2004. If you have a maintenance agreement you should have automatically received this update.
TRANSYT 16 Sale: Unlimited Licences £4,500