What is the function of a safety lock mechanism in MEWPs?

The function of a safety lock mechanism in Mobile Elevating Work Platforms (MEWPs) is primarily to keep the equipment stable during operation. This mechanism ensures that the platform remains securely locked in place, preventing any unintended movement that could lead to instability. By stabilizing the work platform, it helps protect the operator and any personnel working on or near the MEWP, thereby reducing the risk of accidents or falls that could occur due to shifting or tipping.

When the safety lock is engaged, it can also assist in maintaining operations within designated safety parameters, further reinforcing the platform's ability to function safely at various heights. This feature is critical for ensuring compliance with safety regulations and promoting a safe working environment.

The other choices relate to different aspects of safety or operational efficiency, such as automatic braking, unauthorized access prevention, and maintaining specific working heights, but they do not address the primary role of the safety lock mechanism in ensuring the stability and security of the MEWP during operation.