Which action should be taken before starting the bus engine?

Before starting the bus engine, it is essential to check fluid levels to ensure the vehicle is in good operating condition. This includes checking engine oil, coolant, brake fluid, and other important fluids. If any fluid levels are low, it could indicate a potential issue that needs to be addressed before driving, helping to prevent possible breakdowns or accidents while on the road.

Performing this check ensures that the bus is safe and ready for operation, providing a necessary step in maintaining vehicle safety and reliability. While actions like checking mirrors, ensuring doors are locked, and adjusting the seat are also important for safety and comfort, verifying fluid levels is fundamental to the bus’s mechanical integrity and operational readiness.