What is the correct procedure for safely working under a vehicle?

The correct procedure for safely working under a vehicle involves using jack stands to support the vehicle after it has been lifted with a jack. This practice is crucial for ensuring safety while performing repairs or inspections beneath the vehicle. Hydraulic jacks are typically used to lift the vehicle, but they are not designed to hold the weight of the vehicle for extended periods. If a vehicle were to slip or fall while only being supported by a jack, it could lead to severe injuries.

Using jack stands, which are specifically designed to hold the weight of the vehicle securely, ensures that the vehicle remains stable and reduces the risk of it coming down unexpectedly. It is essential to properly position the jack stands under the vehicle’s designated support points to maximize safety. This procedure aligns with industry safety standards and best practices in automotive repair and maintenance, providing a reliable method for safely accessing the undercarriage of a vehicle.

The other mentioned practices lack the necessary safety measures and could lead to critical accidents. For instance, merely working under a vehicle supported only by a hydraulic jack does not provide the necessary assurance against failure. Additionally, relying solely on tires or avoiding working under vehicles entirely does not promote productive repair practices while ensuring safety.