I used to live in Pointe Claire (a west island community) and would almost always use the 540/40 route onto the island from the west - even though my house was closer to the 20. The 20 is a pain due to the extra traffic lights that you encounter. I was through that area on the 20 last November and it had not changed since I lived there - I was wishing I took the 40 like I used to.