This is a very good question that could have many answers. First of all, we constantly have new employees at the Fire Department. As part of their initial and on-going training, they are required to learn how to safely operate the ambulances and fire units. The best way to accomplish this is to allow them to operate these vehicles under direct supervision of a more experienced firefighter. Secondly, the firefighter may be learning a particular part of town by driving that area to familiarize themselves with the streets, dips, curves, etc.
Thirdly, we perform periodic checks of fire hydrants throughout town. This includes driving by the hydrants to check for damages, paint condition, location, etc. However, all units are available for immediate response to an emergency if needed.