People often mix up a major offense CDL disqualification with a serious traffic violation, but they are not the same. A serious traffic violation usually involves unsafe driving conduct like excessive speeding, reckless driving, or improper lane changes, and repeated violations can lead to a temporary loss of commercial driving privileges. A major offense CDL disqualification is more severe. It happens when a commercial driver commits one of the highest-level offenses under CDL rules, such as DUI, leaving the scene of a crash, using a vehicle in a felony, or refusing alcohol testing. The result is a mandatory disqualification for a set period, often one year for a first offense and longer, sometimes lifetime, for later offenses.

For a working driver, that difference matters. A serious traffic violation can put a CDL at risk over time. A major offense can take it away immediately, even if the incident happened in a personal vehicle. Federal disqualification rules appear in 49 C.F.R. § 383.51 (2024), and New Hampshire follows those standards through its CDL enforcement.

In an injury claim, a major offense can affect liability, settlement value, and credibility. If a crash involved alcohol, fleeing the scene, or another major offense, insurers and juries may view the driver's conduct much more harshly. In New Hampshire, most personal injury lawsuits must be filed within 3 years under RSA 508:4 (2024).