There are already long traffic and streetcar queues extending east on King from Spadina thanks to the volume of auto and transit traffic, and interference from pedestrians. They both board streetcars at the … Signalled intersections impose certain limits on the number of cars per hour, especially if only one can pass through per direction per cycle (not unusual if they all stop to handle passengers and/or wait for a clear path to turn). Typical city traffic signals operate at or