Every week Missouri riders Google “Is lane splitting legal here?” and “What happens if I’m hit while lane splitting?” The short answer is that Missouri has not legalized the practice—and doing it can slash an injury payout under the state’s comparative-fault rules. Below you’ll find the details riders keep asking about in Google’s People Also Ask box.
1. Definition of Lane-Splitting vs. Lane-Filtering
- Lane-splitting: riding between moving traffic lanes, usually at higher speeds.
- Lane-filtering: weaving between stopped or very slow traffic to reach the front of a queue.
Only California, Arizona, Montana and Utah permit some form of either practice. Missouri is not on that list.
2. Missouri Traffic Statutes on Lane-Sharing
Missouri law entitles a motorcycle to full use of a lane and forbids overtaking a vehicle within that same lane (Mo. Rev. Stat. § 304.015). The statute also bars riding “between lanes of traffic,” which is the textbook definition of lane-splitting.
Key points:
- Two motorcycles may ride side-by-side in one lane.
- Bills to allow limited filtering—HB 2032 (2024) and HB 705 (2025)—stalled in committee, so no change is in force.
- Police can cite violators for improper lane usage or careless & imprudent driving even though “lane splitting” isn’t named in the ticket book.
3. How Lane-Splitting Affects Fault Allocation
Missouri follows pure comparative fault: any percentage of blame you carry reduces your damages by that same percentage (RSMo § 537.765). If you’re injured while lane-splitting, defense lawyers argue:
- You violated § 304.015 by passing inside the lane.
- You therefore bear at least partial fault for the crash.
Even 1 % fault knocks a dollar off your award; 50 % fault cuts it in half.
4. Comparative-Negligence Scenarios for Riders
Takeaway: Each case is fact-specific, but lane-splitting almost always gives insurers ammo to shrink your payout.
5. Safety Tips if You Ride in Congested Traffic
- Stay visible: use high-contrast gear and keep LED headlights on.
- Hold your lane until a full opening appears; change lanes entirely before passing.
- Use camera footage: a bar-mounted action cam can rebut false “reckless” claims.
- Know the insurance clause: many Missouri motorcycle policies exclude coverage for violations of traffic law—including illegal lane-splitting.
- Track pending bills: if a filtering bill passes, follow the exact speed and traffic-flow limits written into the statute.
Conclusion: Get Clarity Before You Split — Call UB Law Firm
Missouri roads do not authorize lane-splitting, and doing it can torpedo an injury claim. If you’ve been hurt—helmet on or off—UB Law Firm’s motorcycle-injury team can:
- Reconstruct the crash with dash-cam and traffic-cam footage.
- Counter insurer arguments about comparative fault.
- Pursue the full compensation you deserve on a no-win, no-fee basis.
Questions after a recent crash? Call 573-227-6118 or request a free consultation online. One conversation could protect every dollar of your claim.
