The TRANSYT-7F model has been altered to represent the common case of near-side transit stops in shared lanes. This paper demonstrates the operation and principal characteristics of the new simulation model by describing its application to a sample network. It is seen that delays and stops can be reduced considerably when signal timings reflect the transit loading operation appropriately. Some rules of thumb for timing of traffic signals in response to the arrival of transit vehicles are developed through the new model and discussed in the paper. It is seen that some accepted intuitive responses to transit arrivals are wrong.