to those who say "follow the rules, then there's nothing to worry about", well...
i wrote about this couple years back i think, but my mother got "careless driving" ticket for sliding on ice.. No known "Laws" were broken. condition of the road were horrible, and she just couldn't catch the slide in time. (nor do i think she was capable, approaching senior status soon... but that's another matter). the car at the time had ice tires with studs on.
so... it's really not true. if you are just shi+ outta luck, you can and WILL get fined for anything.