The video below is a striking illustration of what is possible when intelligent planning is applied to a road that runs through an area.
As measured, the total roadway space required for everything in the video is 56 feet. The current right of way along local roads such as Weston Road, Jane and Lawrence Avenue is at their narrowest, 27 metres or 88.6 feet. Unless I’m mistaken, this would allow the modifications shown in the video with a minimum of 16.3 feet feet for sidewalks on either side. Check out various rights of way on every major street in the city here. According to the video, traffic volume doesn’t suffer and cyclists are then able to operate in safety.