Send us a note
The fastest way to reach the editorial team is by email at editor@cdl-prep-hub.example. We read every message and respond within five business days. If your message is about a specific practice question, please include the endorsement, the question text or ID, and a brief description of what you believe is wrong or out of date.
Question corrections
We take question accuracy seriously. The CDL knowledge exam tests safe operating procedures, and a wrong answer in a practice question is more than a typo — it can train an applicant to make an unsafe choice. If you have firsthand experience as a CDL holder, instructor, or examiner and you spot a question that contradicts current federal regulation or AAMVA guidance, we want to know. Approved corrections are published transparently in our site changelog.
Partnership inquiries
We work with DOT-physical providers, accredited CDL training schools, employer recruiters, and industry tools that genuinely serve drivers. If you'd like to discuss a partnership, please introduce your organization in your initial email and include any relevant credentials. We do not accept payment to modify practice question content or study guide editorial.
Press
Members of the press are welcome to use any text or screenshot on the site without prior permission, with attribution to "CDL Prep Hub." For interviews or commentary on the trucking industry, federal CDL regulation, or driver workforce trends, reach out to the address above and we'll route your request to the appropriate team member.
For drivers preparing for CDL applicants and industry partners, additional context — including federal manual excerpts, employer hiring practices, and DOT medical guidance — is widely available from industry resources. Continue reading on a recommended industry resource for further detail. Always cross-check anything you read with the current edition of your state CDL manual, since enforcement guidance is updated periodically.