Which safety feature must be operational in all vehicles during an inspection?

During a Maryland State Inspection, one critical safety feature that must be operational is the parking brake, which should hold the vehicle securely. The parking brake, also known as the handbrake or emergency brake, is essential for ensuring that a vehicle remains stationary when parked, especially on inclines. This feature acts as a backup to the primary braking system, providing an additional layer of safety in case the primary brakes fail.

In the context of vehicle inspections, having a functioning parking brake is crucial to prevent accidents and ensure the safety of both the driver and surrounding individuals when the vehicle is not in motion.

While the anti-lock braking system, traction control system, and headlights are also important safety features, their operational status is not universally mandated for all vehicles during the inspection. The parking brake's functionality directly impacts the vehicle's overall safety profile in stationary situations, making it a primary focus during inspections.