Motorcycle helmet and lane-splitting laws in Alaska

Alaska is one of the states where a licensed adult can legally ride a motorcycle with nothing on their head. It's also a state where slipping between lanes of stopped or slow traffic will get you a ticket. Both rules surprise a lot of riders, and both matter a great deal the moment a crash turns into an insurance claim or a lawsuit. Here is what Alaska law actually says, with the statute and regulation numbers you can check for yourself.

Who has to wear a helmet in Alaska

Alaska does not have a universal helmet law. The controlling statute, AS 28.35.245, says a person 18 or older is not required to wear a helmet while operating a motorcycle if they hold a motorcycle license or endorsement.¹ Read that closely, because the exemption is narrow. It reaches only licensed adult operators.

Everyone else still has to cover up. Under the rules the Division of Motor Vehicles publishes in its Motorcycle Manual, a helmet is required for any operator under 18, for any passenger regardless of age, for anyone riding on an instruction permit, and for anyone taking the motorcycle road test.² A 45-year-old with a full motorcycle endorsement can ride bare-headed, but the moment that rider carries a passenger, the passenger's head has to be covered. A rider still learning on a permit gets no exemption at all.

The helmet also has to be a real one. AS 28.35.245 bars the sale of any motorcycle helmet in Alaska that fails to meet the standard set by the commissioner of public safety,¹ and the recognized federal benchmark is FMVSS 218, the U.S. Department of Transportation standard at 49 CFR 571.218 covering impact absorption, penetration resistance, and the retention strap.³ A novelty shell with no DOT certification is not a helmet for legal purposes.

Lane splitting is illegal, but lane sharing is allowed

Here Alaska draws a hard line. Lane splitting, riding between two lanes of traffic or between rows of stopped cars, is prohibited. The regulation is 13 AAC 02.427. It says no motorcycle driver "may overtake and pass another vehicle in the same lane occupied by the vehicle being overtaken," and a rider "may not drive between adjacent lanes or lines of traffic, or between adjacent lines or rows of vehicles."⁴ There is no traffic-speed exception and no rush-hour exception. Thread the gap between cars and you are breaking the rule, even at a dead stop.

What Alaska does permit is lane sharing. The same regulation lets two motorcycles ride "two abreast in a single lane by consent of both drivers," and it caps the practice there. No more than two may share one lane.⁴ It also protects a single rider's space: no car may be driven so as to deprive a motorcycle of the full use of a lane.⁴ The only carve-out is for police officers on duty, and even they still owe a duty to ride with regard for everyone's safety.⁴

If you learned to ride in California, unlearn the habit here. Alaska has never joined the short list of states that allow filtering or splitting.

What the helmet choice can do to a crash claim

The legal freedom to ride bare-headed does not make it a safe choice, and it can follow you into a claim. Alaska uses pure comparative negligence under AS 09.17.060, so a jury assigns each person a percentage of fault and cuts your damages by your share.⁵ A rider found 90 percent at fault still recovers the other 10 percent, because Alaska sets no threshold that bars recovery outright. The trade-off is that anything touching your own conduct, protective gear included, can come up when fault gets apportioned.

The safety math isn't close. NHTSA estimates helmets are about 37 percent effective at preventing rider deaths and about 67 percent effective at preventing brain injuries.⁶ Alaska's own count moved the wrong way recently: the state Highway Safety Annual Report recorded motorcyclist deaths climbing from 8 to 10 in the latest year measured, with unhelmeted fatalities doubling from 1 to 2.⁷ Small absolute numbers for a small-population state, but the head is where the risk concentrates.

Alaska's damage caps and why they matter to riders

A serious motorcycle wreck often means a permanent injury, and Alaska caps part of what you can collect for one. Under AS 09.17.010, noneconomic damages, meaning pain, suffering, disfigurement, and loss of enjoyment of life, are capped at $400,000 or your life expectancy in years times $8,000, whichever is greater.⁸ For a severe permanent physical impairment, severe disfigurement, or death, the ceiling rises to $1,000,000 or life expectancy times $25,000, whichever is greater.⁸ Economic damages, your medical bills and lost income, are not capped.⁸ Because motorcycle injuries skew toward the severe and permanent, which cap applies is a genuine fight in these cases.

Insurance minimums and the coverage you should actually carry

Alaska requires liability coverage of at least $50,000 per person for bodily injury, $100,000 per crash, and $25,000 for property damage under AS 28.22.101.⁹ In a motorcycle crash with a hospital stay, that 50/100 bodily-injury floor disappears fast. Uninsured and underinsured motorist coverage is where riders protect themselves. Alaska requires insurers to offer it, but AS 21.96.020 lets you reject it in writing, and once rejected it stays off the policy until you ask for it back in writing.¹⁰ Check your declarations page before you need it, not after.

Deadlines after an Alaska motorcycle crash

You generally have two years from the date of the crash to file a personal injury lawsuit in Alaska under AS 09.10.070.¹¹ Miss that window and the claim is almost always dead, however strong it was. If the injured rider was under 18, the deadline is tolled during minority under AS 09.10.140, so the two years runs from the 18th birthday.¹² Damage to the bike itself runs on the same two-year statute.¹¹ If your motorcycle was repaired but is worth less on resale now, that lost value is a separate claim, and the Alaska diminished value guide covers how it works.

Document the crash early. The Alaska crash reports page walks through pulling the official report for your wreck.

None of this replaces advice on your own facts. A rider clipped by a left-turning car has a very different case from one who went down alone on gravel, and the helmet question, the fault split, and which damage cap applies all turn on the details. If you're weighing a claim, the legal directory can connect you with an Alaska attorney who handles motorcycle cases.

This is general information about Alaska law, not legal advice.

Sources

1. Alaska Stat. 28.35.245, Motorcycle helmet. https://www.akleg.gov/basis/statutes.asp#28.35.245

2. Alaska Division of Motor Vehicles, Motorcycle Manual. https://dmv.alaska.gov/media/bbxnnsrr/mcman.pdf

3. 49 CFR 571.218, FMVSS No. 218, Motorcycle helmets (U.S. DOT/NHTSA). https://www.ecfr.gov/current/title-49/subtitle-B/chapter-V/part-571/subpart-B/section-571.218

4. 13 AAC 02.427, Driving motorcycles on roadways laned for traffic; Alaska Court System, Vehicle and Traffic Offenses Booklet. https://public.courts.alaska.gov/web/forms/docs/pub-131.pdf

5. Alaska Stat. 09.17.060, Comparative negligence. https://www.akleg.gov/basis/statutes.asp#09.17.060

6. NHTSA, Traffic Safety Facts, Motorcycles (2023 Data). https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/813732.pdf

7. Alaska DOT&PF, State of Alaska Highway Safety Annual Report, FFY 2025. https://dot.alaska.gov/dmio/hwysafety/assets/pdf/FFY2025-Alaska-Highway-Safety-Annual-Report.pdf

8. Alaska Stat. 09.17.010, Noneconomic damages. https://www.akleg.gov/basis/statutes.asp#09.17.010

9. Alaska Stat. 28.22.101, General coverage requirements; policy limits. https://www.akleg.gov/basis/statutes.asp#28.22.101

10. Alaska Stat. 21.96.020, Uninsured and underinsured motorist coverage. https://www.akleg.gov/basis/statutes.asp#21.96.020

11. Alaska Stat. 09.10.070, Actions for torts and injury to personal property to be brought in two years. https://www.akleg.gov/basis/statutes.asp#09.10.070

12. Alaska Stat. 09.10.140, Disability of minority or incompetency. https://www.akleg.gov/basis/statutes.asp#09.10.140