New LED tail lights 69 Cuda

SebastianSpaghetti said
First, let me apologize for my message yesterday. When defending our products I sometimes become overzealous.

I accept your apology with thanks. I understand why you would be proud of products that you put hours, years, heart, soul, and dollars into.

NHTSA does not "certify" or "approve" products. Compliance with NHTSA regulations is based on self-certification by the manufacturer. This means that the manufacturer of regulated equipment must exercise due care in performing whatever tests, studies or calculations are required to satisfy itself that the certified items comply with the regulations. The manufacturer's self-certification is then passed along through the distribution chain. Certification is automatically implied when a product is offered for sale, since the law prohibits a manufacturer, distributor, importer, dealer or motor vehicle repair business from knowingly selling equipment that is not in compliance with the FMVSS. Certification is also affirmed through marking requirements such as NHTSA's rule that certain lighting equipment be marked "DOT."

This is exactly, precisely what I said.

As you can see, we don't have to send our products to some company to have them tested. Any reasonable person can see our lights are brighter and provide an instant on response time.

Oops...no. You have very completely misunderstood your obligations under the law. The requirement you have to meet is not what you might think any reasonable person can see. The requirement is that the device meet all applicable provisions of FMVSS 108. Those are expressed in terms of intensities, in candela, at test points throughout a range of vertical and horizontal angles. There are other requirements, too, such as intensity ratio between bright and dim modes (3:1 at certain test points, 5:1 at others), intensity maintenance with prolonged illumination (even some of the major-brand LED units for buses and trucks have challenges meeting this one), and others. Safety compliance is not a matter of subjective "Yeah, that looks brighter" or "Yeah, that looks bright enough" opinion. It is an objective yes/no deal which can be determined only by photometric testing on a photogoniometer. If you do not have a photogoniometer, someone who does have one has to do the test.