Can a passenger car be equipped with an air horn?

[RyderDella]

Household passenger cars can be equipped with air horns, but it is necessary to apply to the vehicle management office at the registration location. Introduction to Air Horns: Electric air horns generate compressed air through a DC motor air pump, which is then directed into the sound-producing device (copper disc, silicone disc, or paper disc) of the air horn via flame-retardant rubber tubing to produce sound. The sound is then amplified through a horn outlet to serve the purpose of warning and alerting. Electrically controlled air horns consist of two to four or even more horn tubes, with air pressure provided by the vehicle's built-in air pump (brake air pump or electric air pump), and the vehicle's horn switch connected to the electric control switch. Air Horn Specifications: Vehicle-mounted electric air horns mainly come in specifications such as 12V and 24V, primarily suitable for motorcycles and cars. 24V air horns are mainly used for large vehicles such as container trucks, medium-duty trucks, and buses. Air horns are categorized by the length of the horn tube into different audio frequencies—the longer the tube, the lower the frequency, and the shorter the tube, the higher the frequency. The role of air horns is not only for warning; if installed in the right position, the design of the air horn can also serve as an elegant decoration for the vehicle.

[LawsonDella]

As a daily driver of a compact car, I was initially curious about the commanding sound of an air horn, thinking installing one would make my car more noticeable. However, after actually trying it out, I realized there are many issues: installation requires additional equipment like a compressed air system, which not only consumes electricity but also takes up space; the sound is too loud for urban streets, easily startling pedestrians or even causing traffic accidents—I once nearly frightened an elderly person; worse yet, regulations are strict, and installing an air horn on a small car is considered illegal modification in many places, leading to fines when caught by the police. Personally, I feel the factory-installed horn is sufficient. When it comes to modifications, safety should come first—don’t take unnecessary risks. If you really want to upgrade your horn, opting for a low-decibel electric horn is a better choice—it’s practical and doesn’t disturb others, avoiding unnecessary trouble and the hassle of car repairs. In short, installing an air horn on a small car is more trouble than it’s worth. Keeping it stock is more worry-free and effortless, with safety and compliance being the top priorities.

[AllisonLee]

I've been into car modifications for years, and air horns definitely bring a wild vibe. Installing them on a compact car is a form of personal expression. The modification process is quite interesting: you need to add an air tank, piping, and switches, and be careful with wiring to avoid damaging the circuits. However, the decibel level is too high—I've experienced neighbors complaining and filing complaints. Some city regulations explicitly prohibit non-commercial vehicles from installing such horns to prevent noise pollution. Experience has taught me that while modifications are cool, they require professional technicians; otherwise, DIY attempts might lead to air leaks or battery drain issues. I advise enthusiasts not to blindly follow trends—check local regulations first before making any moves. If you really want a loud horn, opting for an electric version is safer and more convenient. For daily driving, the stock ones are far more reliable. The fun in modifications lies in pursuing them in moderation—don't land yourself in fines or repair troubles.

[VonSteven]

As a newly licensed driver, I initially thought air horns were cool and wanted to try installing one on my car. After researching, I realized the risks: regulations prohibit horns exceeding decibel limits, and non-compliant installations could lead to fines. Technically, it's also challenging, requiring additional equipment that might damage the car if improperly installed. Friends advised me it's not worth the risk, suggesting I stick with the factory horn for safe driving. I believe as a beginner, mastering driving skills and safe habits is more important than modifying horns—no need to copy flashy trends. Keeping the original setup is simpler, saves money, avoids trouble, and respects others' peace on the road.