When can you use your horn?

Answer: B — To warn another driver of your presence

Using your horn to warn another driver of your presence is appropriate and serves an important safety function. It can help prevent accidents and enhance communication between road users, especially in situations where visibility may be compromised or when another vehicle is encroaching or performing an unexpected maneuver. The purpose of the horn is to alert others to your presence, making it a valuable tool for enhancing safety on the road. While there may be other situations where a horn might be considered, such as signaling or drawing attention, using it for these purposes can be inappropriate or even illegal in many jurisdictions. For instance, signaling a turn should be done using turn signals rather than the horn, which is designed specifically for warnings. Expressing frustration with the horn is not a constructive use of the device and can instigate road rage or unnecessary conflict. Similarly, attracting attention at traffic lights can lead to distractions that could compromise safety, as the focus should remain on driving conditions rather than using the horn in such contexts.