CDL Study Hub is a small, ad-supported reference site. If you notice a broken official handbook link, a factual error in a study note, or you have a general question about how the site works, the fastest way to reach us is by email.
What we can help with
- Reporting a broken or outdated official state handbook link
- Flagging a factual error in a study note or practice question
- General questions about how CDL Study Hub organizes its content
- Advertising or partnership inquiries
What we can't help with
We are not affiliated with the FMCSA, the U.S. Department of Transportation, or any state DMV, DPS, or DOT. We can't schedule your CDL exam, check your application status, or advise on whether a specific medical condition or driving record will disqualify you. For those questions, contact your state licensing agency directly — links are on our Handbooks page.
Response time
This is a small operation, so please allow a reasonable amount of time for a reply. We read every message but can't guarantee an individual response to every inquiry.