
I think carney wants policy to speak for itself and parties and mps to vote balanced between how their party and their riding expects them to. I hope it helps stir up the us vs them mentalities and make mps vote a little more independently from their party.
A similar rule applies to not parking too closely to stop signs in my area. There aren’t any extra signs or painted curbs, drivers are just expected to ask themselves, is this too close to that stop sign? I don’t see how crosswalks are any different. If you give yourself 2 car lengths from the crosswalk you should be good for most cars.