The DOT certification is issued and regulated by the National Highway Traffic Safety Administration (NHTSA), a division of the US Department of Transportation.

The DOT certification is issued and regulated by the National Highway Traffic Safety Administration (NHTSA), a division of the US Department of Transportation. It certifies whether automotive components such as tyres, braking systems, or lighting equipment comply with the Federal Motor Vehicle Safety Standards (FMVSS).

This certification serves as a mandatory requirement for selling such products in the US market, ensuring adherence to road safety regulations. Suppliers achieving DOT certification demonstrate compliance with rigorous quality control and testing procedures, reflecting their commitment to product reliability and consumer safety.