Which of the following statements is true regarding backup alarms in commercial cargo vehicles?

The true statement regarding backup alarms in commercial cargo vehicles is that they must be used at all times. This is vital for ensuring safety in environments where these vehicles operate, as backup alarms serve as a critical warning to pedestrians and other nearby workers about the vehicle's movement. The use of backup alarms provides essential auditory alerts, significantly reducing the risk of accidents when vehicles are reversing.

Regulations and best practices emphasize the importance of having these alarms activated consistently to protect both the vehicle operators and those in proximity, making it a non-negotiable safety requirement in many operational contexts, not limited by vehicle size or operator preference. This ensures a standard protocol across various types of commercial vehicles, enhancing overall workplace safety.