Ahhhhhh, I'm sorry. I mis-read what you wrote. I thought you said switching lanes. To be honest, I'm 50/50 on this when I drive. I live in Brooklyn, it's mostly residential and traffic isn't nearly as bad as Manhattan. When I want to pull over (double park) on a multiple lane, one way street, I normally just check my rear view to make sure I don't stop short and make the guy behind me have to go around me (most people wouldn't even do that, they'll just stop right in front of you and get out of their car and run into a store!).

But in the city, I would normally do a head check if I want to pull closer to the left of my own lane (to take an empty parking spot for example) because I've had close calls with cyclists, moped riders, razor scooter riders, electrical moped riders, etc.)....especially when I'm driving under 20mph when all these things can be right next to me.

I tried doing that, but it's just so hard to get used to!!! I know it's ********, but I like to see a very very tiny portion of the side of my car in the side mirrors. Your way is the "elite" way of doing it, but I just can't get used to it. I don't know if anyone else does this for blind spots...older folks may not want to twist their heads back in a swift motion. You can easily look at your side mirrors, and then LEAN FORWARD a foot or two and you'll see your blind spot that way. But that takes longer than a head check.