Federal serious violation
Improper / Erratic Lane Change Defense
Improper or erratic lane changes are federally listed serious violations. They are often paired with other citations after a single traffic stop.
What this charge means for your CDL
Improper, erratic, or unsafe lane changes appear on the federal serious-violation list. A conviction can combine with another serious ticket to trigger disqualification.
Potential consequences
- Serious-violation status under federal CDL rules
- CSA points and carrier scrutiny
- Insurance increases
How these cases are defended
- Demonstrate proper signaling and mirror checks
- Show road work, debris, or hazards forced the maneuver
- Challenge the officer's vantage point and characterization
Do not just pay this ticket. Paying is a guilty plea that can lock in a conviction on your CDL record. Talk to an attorney before your deadline.
Related CDL defense
Laws vary by state and the facts of your case matter. This page is general information, not legal advice. See our serious violations guide for the federal framework.
Answers for drivers
Improper Lane Change: common questions
What makes a lane change 'erratic'?+
It is largely a judgment call by the officer. That subjectivity is also where a defense attorney can create reasonable doubt or negotiate a reduction.