What is the procedure if the governor fails?

When the governor fails, monitoring air pressure closely is crucial as it allows the operator to maintain awareness of the air system's performance. The governor is responsible for regulating the air pressure within the brake system, and a failure can lead to either insufficient pressure for braking or an over-pressurized system.

By keeping a close eye on the air pressure gauges, the driver can detect any significant drops or rises in pressure that may indicate issues that need to be addressed. This vigilance can help ensure that the brakes remain functional and prevent potential brake failure.

Continuing to drive without stopping would be dangerous, as it might not allow for necessary corrective actions. Using the emergency brake immediately could lead to sudden stops, which can be hazardous under certain conditions. Replacing the governor right away, while a possible course of action, cannot be performed instantly while operating a vehicle and may not be feasible depending on the situation. Therefore, closely monitoring air pressure is the most practical and immediate step to take.