Why does the car alarm sound when the speed exceeds 30?

[LeviMarie]

Vehicle alarms sounding when exceeding 30 is due to unintentionally setting a speed limit reminder, which can be canceled. Below is extended information about vehicle speed: 1. Concept of Vehicle Speed: Vehicle speed generally refers to the driving speed of a car. It is the distance a car travels per unit of time, commonly measured in kilometers/hour or meters/second. 2. Spot Speed: Spot speed is the instantaneous speed of a car passing a specific point on the road. The arithmetic mean of a set of spot speed observations is the average spot speed. Spot speed is widely used in traffic engineering for setting road design speeds, installing traffic control facilities, determining traffic management methods, implementing traffic improvement measures and their economic analysis, exploring speed trends of various vehicle types, and evaluating the effectiveness of road traffic facilities, traffic management, and improvement measures.

[VanessaMarie]

I see many such cases every day in my auto repair work. Setting the speed alarm to 30 is a safety regulation for factory or school zones. Drivers may accidentally exceed the speed limit, and the system monitors the speed—once it surpasses 30 kilometers per hour, it triggers an alarm to remind them to slow down and avoid hitting pedestrians. The original design intention is to protect the safety of pedestrians and workers, especially in blind spots or areas with children. In the long run, this can reduce accident rates by up to 70%. Additionally, the vehicle alarm system requires regular maintenance, such as checking whether the sensors are accurate, otherwise false alarms can be annoying. If you're interested, we can discuss how to adjust sensitivity to maintain safe driving habits.

[ZoeRose]

As a driver, my personal experience is that speed alarms are very practical. In areas with a speed limit of 30 km/h, the population density is usually extremely high, and speeding even for a few seconds can lead to accidents. The instant the alarm sounds, it forces you to slow down. I remember that after setting a 30 km/h alarm in residential areas, noise levels decreased, and accidents became fewer. The vehicle system works via GPS or built-in detectors. If the alarm sounds falsely, check the tire pressure or settings. Safety comes first—don't ignore it, as it can save lives. Always pay attention to road conditions and vehicle maintenance to prevent minor issues from turning into major failures.

[OSienna]

I think the speed alarm protects our community's safety. Setting a 30 km/h alarm is required by law on many narrow streets or near schools, and speeding will result in fines and is even more dangerous. The system detects speed and automatically sounds an alarm, designed to prevent accidents, especially to protect children. When driving through these areas daily, the alarm serves as a warning, and it's important to develop the habit of driving slowly. For vehicle maintenance, don't forget to check the horn and wiring.