Commercial drivers in Dallas, TX, can’t afford to miss the details when it comes to DOT testing requirements. This guide from Arc Serenity breaks down everything—from drug and alcohol testing rules to who needs to be tested and when. Whether you're a new CDL holder or a seasoned trucker, this resource keeps you compliant and on the road.
📍 Learn what to expect during a test, where to go in Dallas, and how to protect your driving career.

Read the full guide here: 👉 https://arcserenity.org/unders....tanding-dot-testing-