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Speed limitation ECE R89

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Speed limitation ECE R89

Speed limitation ECE R89

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    ECE Regulation No. 89 sets forth the uniform provisions concerning the approval of vehicles with regard to speed limitation devices (SLDs) and the speed limitation function (SLF). This regulation is critical for enhancing road safety by ensuring that vehicles, particularly commercial vehicles, are equipped with devices that limit their maximum speed, thereby reducing the risk of high-speed accidents.

    Key Requirements:

    1. Construction and Installation: The regulation specifies the technical standards for the construction and installation of speed limitation devices. These devices must be designed to ensure that the vehicle's maximum speed does not exceed the pre-set limit. The installation must ensure that the device is tamper-resistant and functions accurately under all operating conditions.

    2. Performance Standards: Speed limitation devices must meet certain performance criteria, including accuracy and reliability. The devices should be able to maintain the set speed limit without significant deviation and must function correctly under various environmental conditions such as temperature fluctuations and vibrations.

    3. Testing Procedures: The regulation outlines rigorous testing procedures to ensure compliance. These include tests for device accuracy, durability, and resistance to tampering. Manufacturers must conduct these tests to demonstrate that their vehicles meet the required standards. The tests simulate real-world conditions to verify that the speed limitation devices perform as intended.

    4. Maintenance and Inspection: Regular maintenance and inspection of speed limitation devices are mandated to ensure their continued effectiveness. The regulation provides guidelines for periodic checks and servicing to prevent device malfunction or tampering over the vehicle’s lifetime.

    TAT Lab's Role in Iran

    The TAT Lab in Iran is authorized to perform testing and certification for compliance with ECE Regulation No. 89. This includes conducting all necessary tests to ensure that speed limitation devices meet the specified standards. By performing these tests, TAT Lab contributes to enhancing road safety in Iran by ensuring that commercial vehicles are equipped with reliable speed limitation devices.


    ECE Regulation No. 89 sets forth the uniform provisions concerning the approval of vehicles with regard to speed limitation devices (SLDs) and the speed limitation function (SLF). This regulation is critical for enhancing road safety by ensuring that vehicles, particularly commercial vehicles, are equipped with devices that limit their maximum speed, thereby reducing the risk of high-speed accidents.

    Key Requirements:

    1. Construction and Installation: The regulation specifies the technical standards for the construction and installation of speed limitation devices. These devices must be designed to ensure that the vehicle's maximum speed does not exceed the pre-set limit. The installation must ensure that the device is tamper-resistant and functions accurately under all operating conditions.

    2. Performance Standards: Speed limitation devices must meet certain performance criteria, including accuracy and reliability. The devices should be able to maintain the set speed limit without significant deviation and must function correctly under various environmental conditions such as temperature fluctuations and vibrations.

    3. Testing Procedures: The regulation outlines rigorous testing procedures to ensure compliance. These include tests for device accuracy, durability, and resistance to tampering. Manufacturers must conduct these tests to demonstrate that their vehicles meet the required standards. The tests simulate real-world conditions to verify that the speed limitation devices perform as intended.

    4. Maintenance and Inspection: Regular maintenance and inspection of speed limitation devices are mandated to ensure their continued effectiveness. The regulation provides guidelines for periodic checks and servicing to prevent device malfunction or tampering over the vehicle’s lifetime.

    TAT Lab's Role in Iran

    The TAT Lab in Iran is authorized to perform testing and certification for compliance with ECE Regulation No. 89. This includes conducting all necessary tests to ensure that speed limitation devices meet the specified standards. By performing these tests, TAT Lab contributes to enhancing road safety in Iran by ensuring that commercial vehicles are equipped with reliable speed limitation devices.