Why do the greenkeepers still use their vehicles even when there is a trolley/buggy ban in place?

Even if there is a buggy/trolley ban the greens staff need to continue with their work around the course and this will necessitate the use of their buggies and other wheeled machinery. It should be noted that golfers will tend to walk/drive similar paths along the fairways and around greens, thus creating additional wear and damage to the course. The greens staff avoid driving on these areas as much as is practical to minimise wear from their machinery. In extreme conditions the greens staff will also not use their buggies.