How Many Decibels is a Car Horn?

[DiIvan]

Noise must be between 95-115 decibels, while for four-wheeled motor vehicles and motorcycles with a power above 7kW, noise must be between 105-118 decibels. Definition: A horn is the audio signal device of a car. During driving, the driver can emit necessary audio signals as required and regulated to warn pedestrians and alert other vehicles, ensuring traffic safety. It is also used for urging movement and transmitting signals. Precautions: At intersections without signals or supervision, it is recommended to use the horn for alerting, up to three times at most; on mountain roads, curves, and blind spots (intersections without auxiliary mirrors), it is advised to use the horn for alerting, up to three times at most. When overtaking on highways, use the horn in conjunction with lights to alert vehicles in adjacent lanes; when alerting problematic vehicles on the road, it is recommended to first use lights for warning, and if ineffective, then use the horn for alerting. It is best to inform the other vehicle while in a stopped state.

[Jan]

The decibel level of car horns generally ranges between 90 and 120 decibels, depending on the type of vehicle. For example, small cars typically produce around 100 decibels, while large trucks can reach close to 120 decibels. This setting is designed to effectively alert others in noisy environments and prevent accidents. Based on some test data I've seen, when measured at a distance of 1 meter from the vehicle, the average car horn registers around 110 decibels, significantly louder than the 60 decibels of normal conversation. Factors affecting the loudness include the type of horn (electronic or pneumatic), the age of the vehicle, and ambient temperature—horns tend to produce higher pitches in cold weather. While this level of noise ensures road safety, prolonged exposure to high decibels can easily cause hearing damage. It's recommended to avoid unnecessary honking while driving and to regularly maintain and check the horn for any abnormalities. If the sound seems too weak or excessively loud, it's advisable to visit a repair shop to inspect the electrical circuits and aging components.

[Hector]

When it comes to the volume of car horns, after driving for so many years, I can say it typically ranges between 95 to 115 decibels. It's set this loud to ensure it can cut through noise in critical moments and prevent collisions. For example, in urban traffic, it quickly alerts pedestrians or other vehicles. Actual tests show most private car horns hover around 105 decibels, equivalent to the volume of a large concert. When driving, I make a point to honk less in residential areas to avoid disturbing neighbors; excessive noise can also harm the environment. I remember once when my horn sounded weak, replacing the bulb fixed it—maintenance is quite simple. Using it wisely is key, with safety as the top priority.

[SanCayden]

The sound of a car horn typically ranges from 100 to 110 decibels, primarily used for warning of dangers in emergency situations. This volume can effectively cut through noise to reduce accident risks, but excessive use may cause noise pollution or hearing damage. It is recommended to honk only when necessary and promptly check for any damaged components.

[LeClayton]

According to national standards, the decibel level of car horns must not exceed 118 decibels to control noise pollution. Manufacturers typically test them between 90 and 115 decibels during production, with China's regulations being similar to international standards such as those in Europe. As a car owner, it's important to know your vehicle's specifications; if the level is too high, it may indicate a malfunction requiring repair.