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Introduction to US DOT Certification

SINO Testing Services

| 2019-12-16|Return

DOT certification is a mandatory certification system implemented by the United States for transportation vehicles and their components to ensure the safety of the country and its citizens. According to the Federal Motor Vehicle Safety Standards (FMVSS), all vehicles and major component products intended for entry into the US market must be certified by the US DOT and have corresponding markings engraved on the products.

The abbreviation for the Department of Transportation in the United States is DOT, which includes departments such as the National Highway Traffic Safety Administration (NHTSA), the Federal Highway Administration (FHWA), and the Federal Aviation Administration (FAA). Among them, the National Highway Traffic Safety Administration (NHTSA) is responsible for developing, revising, and implementing Federal Motor Vehicle Safety Standards (FMVSS), and requiring motor vehicles and critical component products sold in the United States to comply with DOT certification requirements.


The US Department of Transportation also provides detailed regulations on laboratory testing equipment, testing procedures, product standard requirements, testing tolerances, etc. for motor vehicles and component products. After more than 30 years of practical application, DOT certification has gradually extended from being only implemented domestically in the United States to the entire North American region. This also means that the certification has begun to be recognized by other countries and regions in North America.

IIThe product scope covered by DOT certification

1. Motor vehicles and component products;

2. Aircraft and component products;

3. Ship and component products.

Shenzhen Zhongnuo Testing Company currently only accepts DOT certification for road transportation vehicles, covering the following product range:

1. Vehicles: motorcycles, electric vehicles, buses, trucks, buses, trailers, etc;

2. Spare parts: vehicle lighting fixtures, light bulbs, reflectors, rearview mirrors, brake hoses, tires, wheels, warning signs, child safety seats, car seat belts, glass, motorcycle safety helmets, rear bumpers, etc.

  3、 DOT certification instructions

1. There is no certificate for DOT certification, only a DOT registration confirmation letter issued by the US Department of Transportation;

2. After the company is registered and filed with the US Department of Transportation, its DOT registration information can be found on its official website;

3. The communication between enterprises and the Ministry of Transportation is completed through designated US DOT certified agents;

4. The product certification test report does not need to be submitted to the US Department of Transportation;

5. The US DOT certification adopts a wide in and strict out certification mechanism.

Service hotline: 18924609560 (same WeChat account)

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