The order matters: it's blinker THEN brakes.

Posted by appa-ate-momo@reddit | driving | View on Reddit | 147 comments

If you do it the other way around, you leave drivers behind you thinking you're slowing down for no reason. At best, it's mildly inconsiderate. At worst, they'll try to go around you because you aren't making your intentions clear.

It's a super easy adjustment to make that results in much more considerate and safe driving.