I don't pass the written test or background checks?
if it is true do not pass the test
If you fail the written test or background checks, the DMV will issue a CDL that does not have a HazMat endorsement.
And how will I know if my application has been approved or not?
We will send you an approval notice along with instructions to go to a DMV office to obtain a CDL backed by HazMat. Your new CDL will display the expiration date of your CDL and the expiration date of your HazMat endorsement.
I want to change my self-certification, I want to change my license, how do I do this process? Can it be online or should I go to an office?
Sorry, but no. For that kind of request, you'll have to go to an DMV office.
Oh, ok, that's a boomer. Fine, one more question. A little ago i sent to you my medical examiner's certificate and yesterday i received it back in my mail with a rejection letter, why's that?