An unsafe lane deviation ticket in Wisconsin carries a base forfeiture of $20 to $40 for a first offense, but mandatory court surcharges push the actual amount you pay to roughly $175. The conviction also puts two demerit points on your driving record, can raise your auto insurance for three to five years, and moves you closer to a license suspension if you have other violations. It is a civil forfeiture, not a criminal charge, but the downstream cost is real.
What You Actually Pay
The base forfeiture under Wisconsin Statute 346.13(1) is $20 to $40 for a first offense and $50 to $100 for a second conviction within the same year. A center-lane violation on a three-lane road, treated more seriously because of the head-on collision risk, ranges from $30 to $300.1Wisconsin State Legislature. Wisconsin Code 346.17 – Penalty for Violating Sections 346.04 to 346.16
Those base numbers understate the bill. Every traffic forfeiture in Wisconsin includes fixed surcharges: $21.50 for the justice information system, $68 for court support services, and $13 for the crime laboratory and drug law enforcement fund, among others.2Wisconsin Department of Transportation. Distributing Traffic Citation Deposits and Fines Under the state’s Uniform Traffic Deposit Schedule, the standard total for a first-offense lane deviation comes to about $175. A second offense within a year runs roughly $213, and a center-lane violation totals around $264.3Wisconsin Court System. Revised Uniform State Traffic Deposit Schedule
If the lane deviation caused a crash, separate penalties for property damage or injury can be added, and civil liability for anyone hurt sits entirely outside the traffic ticket.
Two Points, and What They Add Up To
A standard lane deviation conviction under Section 346.13(1) adds two demerit points to your driving record. The four-point center-lane variant under 346.13(2) hits harder.3Wisconsin Court System. Revised Uniform State Traffic Deposit Schedule
Wisconsin suspends your driving privilege when you accumulate 12 or more demerit points inside any rolling 12-month period. The length depends on how far past the threshold you land:4Wisconsin Department of Transportation. Wisconsin’s Point System
- 12 to 16 points: two-month suspension
- 17 to 22 points: four-month suspension
- 23 to 30 points: six-month suspension
- More than 30 points: one-year suspension
Drivers on a probationary license or instruction permit, and unlicensed drivers, face doubled points on any moving violation after the first. For a new driver who already has one conviction on record, a lane deviation ticket becomes a four-point event, putting them a third of the way to suspension after two tickets.5Wisconsin Department of Transportation. Graduated Driver License (GDL) Points and Convictions
Erasing the Points With a Course
A state-approved traffic safety course cuts three demerit points from your total, which is enough to wipe out a standard lane deviation conviction. Notify the DMV within 30 days of completing the course. You can only use the reduction once every three years, so save it for when it will do the most good.6Wisconsin Department of Transportation. Traffic Safety Courses
What It Does to Your Insurance
Insurers pull driving records from the Wisconsin DOT, and a new moving violation signals higher risk. For a single non-accident lane deviation, premium increases of 10% to 20% are common. The surcharge typically stays on the policy for three to five years, which is where the ticket’s real cost lives.
If the citation was tied to a crash, the increase can pass 30% because the insurer sees both the violation and any claim payout. Stacked violations in a short span can also cost you a good-driver discount, and in the worst case a carrier can decline to renew, pushing you into Wisconsin’s assigned risk pool.
Fighting the Ticket
Your citation lists a court date, usually in the municipal court for the jurisdiction where the stop happened. You can pay the forfeiture and accept the points, or plead not guilty and contest the charge at a hearing.
The statute applies only to a roadway “divided into 2 or more clearly indicated lanes.”7Wisconsin State Legislature. Wisconsin Code 346.13 – Driving on Roadways Laned for Traffic If lane markings were faded, missing, or covered by snow, that element weakens. The prosecution also has to show that when you deviated, you did so without first confirming the move was safe for traffic approaching from the rear. That “safe from behind” wording is the heart of the offense, not general untidiness inside your lane.
At the hearing, the citing officer usually testifies and may present dashcam footage. You can counter with your own dashcam video, photos of the road, or witness testimony. Because a forfeiture is not a criminal charge, the burden of proof sits below “beyond a reasonable doubt,” but the state still has to meet it.
Municipal judges have some discretion. A judge can reduce the forfeiture, and some courts offer a deferred prosecution deal where the charge is dismissed after a traffic safety course and a clean stretch. Neither outcome is guaranteed, but both are worth asking about on a first offense with a clean record.
When the Ticket Becomes the Smaller Problem
Weaving is one of the standard cues for impaired driving, and a 346.13 stop often becomes the opening move in an OWI investigation. If that happens, the lane deviation itself is the least of the penalties on the table.
Dangerous lane behavior can also draw a charge under Wisconsin’s negligent-operation statute, Section 346.62. Simple negligent operation starts at $200 to $500. Causing bodily harm through negligent driving carries a fine of up to $2,000 and potential jail time, and causing great bodily harm is a felony.8Wisconsin State Legislature. Wisconsin Code 346.62 – Reckless Driving Inattentive driving under Section 346.89 is another citation that often rides along when a phone or other distraction is involved.9Wisconsin State Legislature. Wisconsin Code 346.89 – Inattentive Driving Officers can and do stack citations from a single stop, each with its own fine and points.
Commercial Drivers Face Sharper Stakes
Wisconsin Administrative Code Trans 327 adopts federal motor carrier safety rules, which impose lane discipline on operators of large vehicles.10Legal Information Institute. Wisconsin Administrative Code Chapter Trans 327 A lane deviation conviction counts as a moving violation on a CDL holder’s record, and enough moving violations inside the federal window can trigger CDL disqualification. For a commercial driver, a two-point ticket is not a small ticket.