Is Lane Splitting Legal in Utah? Lane Filtering Rules for 2026 and What Changes in 2027

Short answer: lane splitting is illegal in Utah, lane filtering is legal, and most people, including a lot of drivers who hit motorcyclists, do not know the difference. Here is what the law actually says, what House Bill 381 changed in 2026, and why lane filtering has an expiration date.

Lane splitting vs. lane filtering

Lane splitting means riding a motorcycle between two lanes of moving traffic. Utah Code 41-6a-1502 prohibits it: a motorcycle may not pass another vehicle inside that vehicle’s lane and may not operate between lanes of traffic, except when lane filtering.

Lane filtering means moving between stopped vehicles to reach the front of a line at a light. Utah legalized it in 2019 with House Bill 149, and it is allowed under Utah Code 41-6a-704(6) only when every one of these conditions is met:

• The road has two or more lanes traveling in the same direction.
• The posted speed limit is 45 mph or less.
• The vehicles you are filtering past are completely stopped.
• You are traveling 15 mph or slower.
• The movement can be made safely.

Filtering on I-15, filtering past traffic that is creeping rather than stopped, or filtering at 25 mph are all lane splitting, and all illegal.

Why filtering is legal in Utah

The Legislature’s reasoning was rear-end crashes. A motorcycle stopped at the back of a line of traffic is the most exposed vehicle on the road, and a distracted driver who does not stop in time hits the rider, not a bumper. Letting riders move to the front of stopped traffic takes them out of that position. When lawmakers extended the law in 2022, they acknowledged that crash reporting during the first three years was too spotty to prove the effect either way, which is why the extension came with another sunset date rather than a permanent law.

Lane filtering expires July 1, 2027 unless the Legislature acts

Utah passed lane filtering with a sunset clause. The 2022 extension moved the expiration to July 1, 2027, and Utah Code 63I-1-241 still lists that date. The 2026 session, including HB 381, did not extend it. Unless a bill passes in the 2027 session, filtering becomes illegal again on July 1, 2027. If you ride, watch the 2027 session.

What HB 381 changed for riders in 2026

House Bill 381, effective May 6, 2026, was mostly about e-bikes, but three parts matter to motorcyclists. First, the three-foot passing law in Utah Code 41-6a-706.5 now covers motorcyclists: a driver who passes within three feet of a motorcycle commits an infraction, or a class C misdemeanor if the rider is injured. Second, the bill defines an electric motorcycle as anything over 750 watts or capable of more than 20 mph on motor power alone, and requires a motorcycle endorsement to ride one. Third, it put helmet requirements for riders under 21 on e-bikes and e-scooters, matching the existing rule for motorcycles in Utah Code 41-6a-1505.

How this plays out in an injury claim

When a driver hits a motorcyclist who was between lanes, the driver’s insurer will call it lane splitting and argue the rider caused the crash. Utah uses modified comparative fault: if you are found 50 percent or more at fault, you recover nothing, and anything under that reduces your award by your percentage. Whether the traffic was stopped, what the speed limit was, and how fast you were moving decide which side of that line you land on. Dashcam and phone GPS data, the light cycle, and witness statements usually establish it. The reverse is also true: if a driver changed lanes into a legally filtering motorcyclist, or crowded a rider inside three feet, those violations put the fault on the driver.

If you were hurt in a motorcycle crash anywhere in Utah and the other side is arguing about how you were riding, talk to a Utah motorcycle accident lawyer before you give a recorded statement. We handle these cases in Salt Lake City, Provo, Ogden, and across the state. The consultation is free and the difference between filtering and splitting may be worth the entire claim.