You can text a phone number or get an "app" now and find out when the next streetcar is coming. This morning at 9 am the next 5 streetcars were scheduled to come as follows: 11 mins, 11 mins, 12 mins, 12 mins, 12 mins. I can certainly understand why you need five streetcars within a minute of one another. Also the actual arrival time is always longer than the TTC "estimates". You would think that the estimate would be an average based on time of day and typical speed of travel, apparently not.
This morning after 15 minutes and no streetcar I took a cab.