Lane splitting is illegal in Utah. Riding a motorcycle between lanes or between rows of moving vehicles is prohibited under state law.1Utah Legislature. Utah Code 41-6a-1502 – Motorcycles, Motor-Driven Cycles, or All-Terrain Type I Vehicles — Operation on Public Highways A related but narrower maneuver, lane filtering, is legal on certain roads when traffic is fully stopped and the rider stays at or below 15 mph.2Utah Legislature. Utah Code 41-6a-704 That filtering allowance is temporary. Unless the legislature acts, it expires on July 1, 2027.
Splitting and Filtering Are Not the Same Thing
The line between the two comes down to whether surrounding traffic is moving. Weaving between cars crawling along at 10 mph on a freeway is lane splitting, and it’s illegal regardless of how slow the traffic is going. Moving between cars sitting dead still at a red light on a city street is lane filtering, and it can be legal if every statutory condition is met. Utah’s official motorcycle safety site states it plainly: lane splitting is illegal in Utah.3Ride to Live Utah. Lane Filtering
When Lane Filtering Is Legal
Utah Code § 41-6a-704 permits filtering only when all of the following are true at the moment you begin the maneuver. Miss one, and you’ve committed a violation.2Utah Legislature. Utah Code 41-6a-704
- You are operating a motorcycle. Mopeds, electric bicycles, and scooters don’t qualify.3Ride to Live Utah. Lane Filtering
- The vehicle you pass is completely stopped. Not rolling, not creeping forward.
- The road has two or more travel lanes going in your direction. A standard two-lane road with one lane each way doesn’t count.
- The posted speed limit on the roadway is 45 mph or lower.
- Your own speed stays at 15 mph or less throughout the maneuver.
- The movement can be made safely. If a gap is too tight or visibility is poor, the law says don’t do it.
One wrinkle on ramps: the statute allows filtering on off-ramps that have two or more lanes in the same direction, even without the 45 mph speed limit requirement. On-ramps are prohibited by name.2Utah Legislature. Utah Code 41-6a-704 Off-ramp traffic tends to slow toward a light at the bottom, which fits the filtering model. On-ramp traffic is accelerating and merging, which doesn’t.
Where You Can Never Filter
Interstate highways and freeways are completely off-limits, no matter what traffic looks like.1Utah Legislature. Utah Code 41-6a-1502 – Motorcycles, Motor-Driven Cycles, or All-Terrain Type I Vehicles — Operation on Public Highways If a freeway accident has turned the lanes into a parking lot and every vehicle is at a dead stop, filtering between them is still illegal. Freeway speed limits exceed 45 mph, and the ban on interstate filtering has no exception for standstill conditions.
Single-lane roads are also excluded, even if traffic is stopped and the limit is under 45 mph. Without a second adjacent lane going your way, there’s no legal space to filter. On-ramps are prohibited by statute. And the moment the cars around you start rolling, even at walking speed, the maneuver becomes splitting rather than filtering.
Penalties if You Get It Wrong
A violation of § 41-6a-1502, which covers both illegal splitting and filtering that fails any required condition, is an infraction.1Utah Legislature. Utah Code 41-6a-1502 – Motorcycles, Motor-Driven Cycles, or All-Terrain Type I Vehicles — Operation on Public Highways Under Utah’s Uniform Fine Schedule, unlisted infractions carry a recommended fine of $110, though the total with surcharges can reach over $1,000. If the violation caused an accident, the court can add $30 as an aggravating factor.4Utah Courts. Uniform Fine Schedule
The Driver License Division also assigns points. Depending on how the citation is written, an illegal lane maneuver is likely to be charged as “Improper Passing” at 50 points or “Other Moving Violations” at 40 points. For adult drivers, 200 or more points within three years can trigger a license suspension of three months to a year.5Utah Driver License Division. Utah Points System
Fault After a Crash
Utah uses a comparative fault system. Each party in an accident gets assigned a percentage of blame, and you can recover damages only if your share is less than the combined fault of the other parties. At 50% or more, you collect nothing. Whatever you do recover is reduced by your own percentage, so a $100,000 award with 20% fault on you pays out $80,000.6Utah Legislature. Utah Code 78B-5-818 – Comparative Negligence
For a motorcyclist, this is where strict compliance with the filtering rules matters beyond the ticket. If you were filtering legally when a driver swung open a door into your path, the driver likely bears full responsibility. If you were doing 25 mph instead of 15, or the cars around you were still rolling, that violation hands the other side a powerful argument that you caused or contributed to the crash. Adjusters and defense attorneys look for exactly that.
The 2027 Sunset
Utah’s filtering law was never written as permanent. The legislature first passed it in 2019 through House Bill 149 with an expiration date of July 1, 2022.7Utah Legislature. HB0149 In 2022, lawmakers extended that deadline to July 1, 2027. Unless the legislature votes before then to extend the law or make it permanent, § 41-6a-704 will be repealed and filtering will become illegal alongside splitting.
Riders who want the allowance to continue should watch for bills in the 2027 legislative session. If no action is taken, every form of riding between vehicles in Utah will be prohibited starting mid-2027.