Guide What is a Speed Limiter in a Car?
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Guide What is a Speed Limiter in a Car?

@CarExamer 311 Views

This article breaks down everything you need to know about what is speed limiter in car. If you’re a car owner or considering buying a new vehicle, you’ve probably heard about speed limiters. But what exactly are they, and how do they work?

What is a Speed Limiter?

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A speed limiter is a device installed in a car that prevents it from exceeding a predetermined speed. Unlike cruise control, which maintains a set speed, a speed limiter actively keeps your vehicle from going faster than a certain limit, enhancing road safety and ensuring compliance with speed regulations.

How Does a Speed Limiter Work?

Speed limiters operate using various technologies, often working in conjunction with the car’s onboard systems. Here are the primary methods:

  1. GPS-Based Systems: These use satellite data to determine the vehicle’s location and the local speed limit. The system adjusts the car’s speed accordingly, ensuring it doesn’t exceed the limit.
  2. Camera-Based Systems: These systems use cameras to read road signs and adjust the vehicle’s speed to match the posted limits.
  3. Combined Systems: Many modern cars use a combination of GPS and camera-based systems for more accurate speed control.

Types of Speed Limiters

Speed limiters come in three main types, each with varying levels of intervention:

  1. Advisory Limiters: These provide warnings to the driver, such as a visual or audible alert, when the car exceeds the speed limit.
  2. Supportive Limiters: These systems offer physical feedback, such as increased resistance in the accelerator pedal, to discourage speeding.
  3. Mandatory Limiters: The most stringent type, these limiters actively reduce engine power to keep the vehicle from exceeding the speed limit.

Benefits of Speed Limiters

Speed limiters offer numerous advantages, including:

  • Enhanced Safety: By preventing speeding, speed limiters can significantly reduce the likelihood of accidents.
  • Legal Compliance: They help drivers adhere to speed limits, avoiding fines and penalties.
  • Fuel Efficiency: Maintaining a consistent, moderate speed can improve fuel efficiency.
  • Environmental Impact: Reduced speed can lead to lower emissions, contributing to a greener environment.

Legal Requirements

In many regions, including the European Union and the United Kingdom, speed limiters are becoming mandatory for new vehicles. From July 2024, all new cars sold in the UK must have an Intelligent Speed Assist (ISA) system installed. This regulation aims to enhance road safety by ensuring vehicles automatically comply with speed limits.

Can You Turn Off a Speed Limiter?

While some speed limiters can be temporarily deactivated, they typically reset every time the car is restarted. Overriding the system by pressing hard on the accelerator is often possible, but it is illegal and defeats the purpose of having the limiter.

Conclusion

Speed limiters are an essential feature in modern vehicles, promoting safer driving habits and ensuring compliance with speed regulations. As technology advances and legal requirements evolve, speed limiters will continue to play a crucial role in road safety. Whether you’re a seasoned driver or new to the road, understanding and utilizing speed limiters can make your driving experience safer and more efficient.

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