Final answer:
When starting a bus on a level surface with good traction, there's usually no need for excessive acceleration or increased engine power, as there's less resistance to overcome.
Step-by-step explanation:
When starting a bus on a level surface with good traction, there is often no need for excessive acceleration or increased engine power. This is due to the reduced resistance when moving the vehicle from a stationary position under such optimal conditions. Drivers can typically use a normal acceleration to smoothly start the bus. Additionally, not requiring heavy acceleration helps in reducing fuel consumption, wear and tear on the bus, and provides a safer environment for passengers on board.