What is an important consideration when using the horn in a commercial vehicle?

Using the horn in a commercial vehicle should be done sparingly and only when necessary. The primary function of the horn is to alert other road users to potential dangers or to communicate your presence in situations where visibility is compromised or another vehicle may not be aware of your actions. Overusing the horn can lead to confusion or annoyance among other drivers and pedestrians, potentially diminishing its effectiveness when it is truly needed. Therefore, it is crucial to reserve horn use for situations that require immediate communication to prevent accidents, such as warning another vehicle of your approach or signaling your presence in blind spots.