Compared to a straight truck or bus, what is true about the number of inspections needed in combination vehicles?

Combination vehicles require more inspections compared to straight trucks or buses due to their complexity and the various components that need to be checked for safe operation. A combination vehicle, which typically includes a tractor and one or more trailers, has additional systems and connections that straight trucks do not possess, such as air brake systems that connect to the trailers, coupling mechanisms, and the operations of the trailers themselves.

These vehicles must be thoroughly inspected to ensure that all parts are functioning correctly and that safety features are in place. For example, checking the air lines and electrical connections between the tractor and trailer is crucial to prevent failures during operation. Furthermore, the driver must also ensure that the cargo is secure, as improper loading can lead to serious accidents. Therefore, the higher number of components and systems in combination vehicles necessitates a more extensive inspection process.