I think as well this is an important point...did someone drive without a seat belt, yes or no? Its a clear cut decision. Parking, were you over the line? Yes or No, clear cut.
Undertaking, some are dangerous and need fining, some are though not so citing the example of a slow mover on the outside lane with two empty lanes inside them.
Stick to the Yes No's for the police, things which are argumentative such as the undertaking example must go to a court, as invariabley most will in any case so we waste more time in the long run. Time spent with the police issuing fines and time wasted in an appeal court will always outweigh the current system in time and cost.
This