If you want to be a safer diver you should think about enrolling in a defensive driving course. You can never have too much schooling when it comes to something as important as driving.
The basic rules of the road may not change, but laws do. It is a good idea to have an up to date understanding of the laws. If you have moved to a new state the laws may be different in your new state, this may be a great time to learn about them.
Defensive driving is all about anticipating a problem and being ready to act when it comes. This is how you should look at all aspects of driving including the understanding of current laws.