Rolling Coal

Out minding our business on a Saturday morning ride and here comes the coal roller. Thankfully no one was suffered from smoke inhalation. However, what is the point of it being against the law in the state of Maryland to roll coal when law enforcement would have to wtiness it themselves to impose any of the $500 fines? Not sure how many people would sign up to ensure the police witness them doing wrong so that they inherit a fine. My point is, we have these bike cameras for proof of wrongdoing against us, but in reality it means nothing to very little unless there a loss of life.......and then MAYbe.