Key Takeaways
- Full lane splitting (between moving traffic) is legal only in California.
- Lane filtering (between stopped or slow traffic) is legal in Utah, Arizona, Montana, Colorado, and Minnesota under state-specific speed and traffic conditions.
- 35 other states explicitly prohibit lane sharing in any form, including Texas, Florida, New York, and Illinois.
- Most legal states cap rider speed differentials at roughly 15 mph and require traffic to be moving under 45–50 mph.
- Hit while lane splitting in California? You can still recover damages under the state’s pure comparative negligence rule.
Lane Filtering vs. Lane Splitting: What’s the Difference?
Lane splitting is riding a motorcycle between lanes of moving traffic, typically on highways. Lane filtering is moving between lanes of stopped or very slow traffic, usually at intersections. The terms are often used interchangeably, but most state laws regulate them separately. The distinction matters: a state may allow filtering but not splitting, and the legal speed thresholds rarely overlap.
States Where Lane Filtering Is Legal in 2026
The table below summarizes every U.S. jurisdiction with current legal lane sharing of any kind. Detailed rules for each state follow.
| State | Legal Status | Rider / Traffic Limits | Statute |
|---|---|---|---|
| California | Lane splitting (full) | CHP guideline: rider <10 mph over traffic; avoid when traffic >30 mph | Cal. Veh. Code § 21658.1 |
| Utah | Lane filtering | Rider ≤15 mph; traffic stopped on ≤45 mph road | Utah Code §41-6a-704.6 |
| Arizona | Lane filtering | Rider ≤15 mph; traffic stopped on ≤45 mph road | A.R.S. § 28-903 |
| Montana | Lane filtering | Rider ≤20 mph; traffic ≤10 mph | MCA § 61-8-392 |
| Colorado | Lane filtering | Stopped traffic | SB24-079 |
| Minnesota | Lane filtering | Rider ≤25 mph; traffic ≤15 mph | HF 5247 |
| 35 other states | Prohibited | — | Varies |
California (Lane Splitting — Full)
California is the only state that permits lane splitting between moving vehicles, codified by AB 51 in 2016 (Cal. Veh. Code § 21658.1). The California Highway Patrol recommends riders stay under 10 mph above the speed of surrounding traffic and avoid splitting when traffic exceeds 30 mph. State law also prohibits drivers from intentionally blocking or impeding a lane-splitting motorcyclist — including by opening a car door.
Utah
Utah Code § 41-6a-704.5 allows filtering on roads posted at 45 mph or less, when traffic is fully stopped. Riders may filter at speeds up to 15 mph. Filtering is not permitted on freeways.
Arizona
A.R.S. § 28-903 mirrors Utah’s framework: traffic must be stopped, the road must be 45 mph or under, and the rider may not exceed 15 mph.
Montana
MCA § 61-8-392 takes a different approach. Filtering is legal when surrounding traffic is moving at 10 mph or less, and the rider may travel up to 20 mph — making Montana the only state that explicitly allows filtering in slow-rolling traffic, not just at a complete stop.
Colorado (New in 2024)
Colorado legalized lane filtering in August 2024. Violations carry a $100 fine. The law includes a sunset provision and is scheduled to expire in September 2027 unless the legislature extends it; in the meantime, CDOT is collecting crash data to evaluate the program.
Minnesota (New in 2025)
Minnesota’s filtering law took effect in July 2025 and uniquely prohibits other drivers from intentionally blocking a filtering motorcyclist — a rider-friendly anti-blocking protection comparable to California’s.
Hawaii (Shoulder Surfing — Expired in 2020)
Hawaii has historically allowed motorcyclists to use the right shoulder to pass stopped traffic in heavy congestion. The provision’s status has shifted in recent years, so confirm the current rule with state authorities before relying on it.
Pending Lane Filtering Legislation in 2026
Eight states are actively considering filtering bills: Connecticut, Maryland, Massachusetts, Missouri, Oregon, Texas, Virginia, and Washington. Texas and Florida — two of the most-searched states for “is lane filtering legal” — have not yet passed any law, and lane filtering remains illegal in both as of April 2026.
States Where Lane Splitting Is Illegal
Lane sharing is explicitly prohibited in 35 states, including Texas, Florida, New York, Illinois, Georgia, North Carolina, and Pennsylvania. Riders caught splitting in those states typically face a traffic citation, possible license points, and elevated insurance premiums after the citation hits their record.
Benefits of Lane Filtering for Motorcyclists
A widely cited UC Berkeley study found that lane-splitting riders had measurably lower injury rates than non-splitters: 9% head injuries versus 17%, 19% torso injuries versus 29%, 60% extremity injuries versus 66%, and 1.2% fatal injuries versus 3.0%. Filtering also reduces rear-end collisions at intersections — historically one of the most common and most serious crash types for stopped motorcyclists.
When Is Lane Filtering Unsafe?
Filtering becomes high-risk when speed differentials are large, lane gaps are narrow, visibility is poor, or drivers do not expect a motorcycle alongside them — for example, near commercial driveways or ramp merges. Most state filtering laws encode these risks by capping rider speed and traffic speed.
Fault and Compensation in Lane Splitting Accidents
If you are hit while lane splitting in a state where it is legal, you can still recover compensation. California’s pure comparative negligence rule allows even a rider found partially at fault to recover damages, reduced by their share of fault. In states where lane splitting is illegal, riders may be found partially or fully at fault — and that finding can dramatically reduce or eliminate any recovery. The legal status of filtering in your state directly shapes your case.
Frequently Asked Questions
What is the difference between lane filtering and lane splitting? Lane splitting is riding a motorcycle between lanes of moving traffic, typically on highways. Lane filtering is moving between lanes of stopped or very slow traffic, usually at intersections. State laws regulate them separately, and a state may allow one without the other.
What states is lane filtering legal in? As of April 2026, lane filtering is legal in Utah, Arizona, Montana, Colorado, and Minnesota under state-specific speed and traffic conditions. California separately allows full lane splitting between moving traffic. Hawaii has historically allowed shoulder-surfing in heavy traffic; verify the current statute before relying on it.
Is lane filtering legal in California? Yes. California is the only state that permits full lane splitting between moving vehicles under Cal. Veh. Code § 21658.1, enacted by AB 51 in 2016. CHP guidelines recommend riders stay under 10 mph above surrounding traffic and avoid splitting when traffic exceeds 30 mph.
Is lane filtering legal in Texas or Florida? No. Neither Texas nor Florida has passed a lane filtering or lane splitting law. Texas is one of several states currently considering filtering bills, but as of April 2026 lane filtering remains illegal in both states.
Is lane filtering legal in Colorado? Yes. Colorado legalized lane filtering in August 2024. Violations carry a $100 fine. The law contains a sunset provision and is scheduled to expire in September 2027 unless extended, while CDOT collects crash data during the trial period.
Who is at fault in a lane splitting accident? In states where lane splitting or filtering is legal, riders can recover compensation under that state’s negligence rules. California’s pure comparative negligence rule allows even partially at-fault riders to recover damages, reduced by their share of fault. In states where lane splitting is illegal, riders may be assigned significant fault, which can reduce or eliminate recovery.
Is lane filtering safe? A widely cited UC Berkeley study found that lane-splitting riders had lower injury rates than non-splitters: 9% head injuries versus 17%, 19% torso injuries versus 29%, 60% extremity injuries versus 66%, and 1.2% fatalities versus 3.0%. Filtering also reduces rear-end crashes at intersections.
Hit While Lane Splitting? Talk to a Motorcycle Accident Lawyer
The motorcycle accident attorneys with The Advocates have helped riders across the country recover after crashes involving lane splitting, distracted driving, and unsafe lane changes. They understand the state-by-state rules, the comparative-negligence math, and the tactics insurance carriers use against motorcyclists. Contact The Advocates today for a free, no-obligation case review.