What is the significance of a driver having an FVC less than 60%?

A forced vital capacity (FVC) of less than 60% indicates a significant restriction in lung function. This level of FVC suggests that the driver's ability to take in and expel air is compromised, which can have serious implications for their overall health and their capacity to safely operate a commercial vehicle.

When a driver's FVC falls below this threshold, it is essential for the medical examiner to consider further evaluation to determine the underlying cause of the reduced lung capacity. Referral for additional testing helps ensure that any potential respiratory conditions, such as chronic obstructive pulmonary disease (COPD) or restrictive lung disease, are thoroughly assessed. This proactive approach can facilitate appropriate management and treatment options, ensuring that the driver is not only compliant with regulations but also safe to drive.

Consequently, recognizing an FVC below 60% as a trigger for further investigation underscores the importance of maintaining high health standards for drivers to protect both themselves and others on the road.