What vehicle is utilized for the purpose of managing the onboard waste system of the aircraft?

The lavatory truck is specifically designed to handle the management of the onboard waste system of an aircraft. It is equipped to collect and remove waste from the aircraft's lavatory tanks after landing. This vehicle plays a critical role in maintaining hygiene and compliance with health regulations, ensuring that waste is efficiently disposed of in a safe and environmentally responsible manner.

In contrast, the catering truck serves a different function, as it is used for loading and unloading food and beverage supplies for in-flight service. The baggage cart tractor is mainly involved in transporting baggage and cargo from the terminal to the aircraft and vice versa, while the lower deck loader assists in loading and unloading cargo from the lower cargo holds of the aircraft. Each of these vehicles serves distinct operational purposes that are vital for smooth airport and airline operations.