Which item would require checking before long vehicle operations for safety?

Checking both tire pressure and oil levels is essential before long vehicle operations for several key reasons related to safety and vehicle performance.

Tire pressure directly influences the handling, fuel efficiency, and overall safety of the vehicle. Under-inflated tires can lead to reduced traction, increased tire wear, and even tire blowouts, especially during extended travel. Proper tire pressure ensures optimal contact with the road and enhances vehicle stability, which is crucial during long trips.

Oil levels are equally important, as oil lubricates the engine's moving parts to prevent overheating and excessive wear. Low oil levels can result in inadequate lubrication, potentially leading to engine failure, particularly in long operations where the engine is under constant load.

Thus, confirming both tire pressure and oil levels before embarking on long vehicle operations supports not only the functionality of the vehicle but significantly contributes to the safety of the operation as a whole, making it necessary to check both items regularly.