If you haul across state lines, you already know that staying compliant with DOT requirements is just part of the job. But one requirement that still confuses a lot of drivers and owner-operators is Unified Carrier Registration, better known as UCR. Every year, thousands of drivers forget to renew this and end up dealing with fines, delays, and unnecessary stress at weigh stations. In this guide, we break down what UCR is, why you need it, when it’s due, why you must renew it