I have a little ongoing dispute with a non-cop friend about what the safest driving style is... Assuming dry pavement of course.
I was always taught that when you turn right onto a busy street, not only should you always stay in the right lane and not cross lanes (which some people do to make the turn "softer"), but you should also make the turn quickly and accelerate briskly, but not enough to squeak the tires.
The thinking behind this is that it gets you out of the way in case for some reason you misjudge the speed of a car you're turning in front of, or you didn't even see them. This not only gets you up to speed and out of the way faster to lessen the chance of them impacting your rear, but also by staying in the right lane, it gives oncoming cars a free zone to swerve into.
My contention also is that when turning off the busy road, you should make the turn fairly fast, again to avoid getting hit in the rear.
My friend, on the other hand, says that slowness is always safer - So you should not accelerate briskly, and perhaps even cross lanes to make the turn "softer" instead of a sharp 90 degree turn into the right lane. He also slows down to about 10 MPH before turning off of a major road - i.e., he drives like an old grandma.
All this came about because he says I scare the Hell out of him when I'm driving - Just because I take turns fairly sharp (not sharp enough to slide or squeal the tires, though), and I don't cross lanes when turning right, which increases his G-forces and thus his "white knuckle" count.
Honestly, this is just the way I've always driven - It was taught to me early that if you're going slower than traffic behind you, just get the Hell out of the way as quickly as possible. I've gone almost 40 years not having anyone rear-end me because of that, I think. Same thing at 4-way stops: Once you see that the other cars are stopping, get the hell through the intersection before they change their mind - I've seen too many of them stop, then automatically start up again as someone else is going through.