What type of horn must be checked during a pre-trip inspection?

During a pre-trip inspection, it's essential to check both the city horn and the air horn. This is because both serve critical safety functions. The city horn, often a standard horn, is used for general warning purposes in urban environments. The air horn, typically louder and more powerful, is designed to alert other drivers and pedestrians in situations where enhanced signaling is necessary, such as on highways or during emergencies.

By ensuring that both horns are operational, a driver can enhance their ability to communicate effectively with other road users, thus promoting safety on the road. Properly functioning horns are vital for the driver's ability to sound warnings and avoid potential collisions. The requirement to check both types of horns highlights the importance of comprehensive safety measures during pre-trip inspections.