What must be included in the equipment of a passenger car aside from brakes?

A horn is a crucial piece of equipment for passenger cars as it serves an essential safety function. It allows drivers to alert other road users of their presence and communicate warning signals. This is especially important in preventing accidents, as a horn can be used to signal caution to pedestrians, cyclists, and other vehicles when necessary.

Proper functioning of a horn is mandated by vehicle safety regulations, emphasizing its role in maintaining a safe driving environment. The effective use of a horn can help avoid collisions and ensure that drivers can effectively communicate with others on the road.

Interior ambient lights, a high-quality audio system, and a navigation system, while they may enhance comfort or convenience, do not fulfill a safety requirement in the same way that a horn does. Therefore, the horn is an integral part of the mandatory equipment that all passenger vehicles must have to ensure safe operation and adherence to legal standards.