To dream of seeing a bus driver represents your ability to take control yet work together with others as a team. It could also mean that you are confused as to which path to take in order to reach your goals. You cannot seem to get ahead in life.
To dream that you are a bus driver implies that you have chosen the correct path to achieve your goals, and you are reaching them fairly rapidly. Try to slow down a little and don't be too aggressive. In particular, if you are a school bus driver in the dream, this could mean that you will reach your objectives faster if you use experience and wisdom to guide you. Perhaps you have achieved a higher level of self-discovery.