In some locals, signalling an intended lane change is a sure fire way to get the guy behind you, currently traveling slower than you, to speed up and "shut the door" on you.Masshole is a defined word in the Oxford English Dictionary. Grew up listening to my Dad curing those damn Masshole's as he drove our family around. My sister would ask but Dad aren't all our relatives from Mass? But before he could get an answer out he would be cut off by another one of those idiots who don't know how to use a blinkah.
It's important to know the driving habits where you happen to be. There are exceptions, but here's the generalities: Montreal, easy to predict - driver will floor it. Toronto, you never know if someone is going to slow down or speed up for any given situation, be ready for everything, the only predictable thing about Toronto traffic is that drivers will gravitate to the passing (far left) lane, often making the far right lane the easiest way to pass (under-taking :O ). Sasketchawan driver in BC mountains - crawl around every corner, speed through the straight stretch. North Bay ON - drive faster than their reflexes should permit once moving, but take an extra 2 seconds when the light changes. Guelph ON slow and will yield the right of way to let you in first. Manitoba - super-obedient drones - won't drive 1 mph over the limit.
BTW there are two types of drivers: