No matter how much money you make, or don't make, your fines for traffic stops should remain the same. If they are higher for rich people, then they should be lower for poor people, but that is never going to happen. So, overall I think they should just be the same for everyone.
If you make more money, then you don't deserve to pay higher fines for traffic stops. Such a system would make no sense and would breach a person's rights in this country. The fact of the matter is that making more money doesn't open a person up to paying higher fees except with taxes.
It is not right to punish people for being rich. A single crime should have the same penalty, no matter how much money the culprit has. Under this scenario, someone who has no money would not have to pay anything at all. The rich should be taxed more, but they should not pay higher fines.
Just because you make more money does not mean that you need to pay more in fines for breaking the law. A rich or a poor person should have to pay the same amount for traffic fines. Now taxation is a whole different subject that should be explored, but not for fines.
It is not right for richer people to have to pay more for minor traffic violations. First, there is no realistic way for the police to know how much money people may. Many people have investments beyond their primary job. There is no practical way to fine people according to their wages.