Liability in Missouri Motorcycle Accidents Involving Illegal Lane Splitting and Filtering

When Interstate 70 outside St. Louis or I-44 near Springfield comes to a grinding halt due to rush hour traffic, the temptation to ride your motorcycle between the lanes of stopped cars is massive. This practice-known as lane splitting at high speeds, or lane filtering at red lights-is legal in some states, but it remains strictly prohibited in Missouri. If a frustrated driver opens their door, or a car suddenly changes lanes and strikes you while you are splitting, the insurance company will immediately try to deny your claim by stating you were breaking the law.

Being issued a traffic ticket for improper lane usage does not automatically erase your right to compensation for broken bones or wrecked property. Liability in these crashes is highly nuanced. Because fighting the insurance adjusters requires a strong command of comparative negligence laws, we highly recommend browsing our US Lawyer directory to find a local motorcycle accident attorney who can protect your financial future.

Missouri's Prohibition on Lane Splitting and Filtering

Missouri does not have a specific statute titled 'lane splitting.' Instead, the highway patrol and local police enforce general traffic laws regarding maintaining a single lane. Under Mo. Rev. Stat. § 304.015, a vehicle must be driven as nearly as practicable entirely within a single lane, and the driver shall not move from that lane until they have ascertained that such movement can be made with safety. Additionally, two vehicles are not permitted to share the same lane side-by-side unless both are motorcycles. By riding the painted line between cars, you are violating this core traffic statute.

How Pure Comparative Negligence Saves Your Claim

If you were breaking the law by lane splitting, how can you sue the other driver? The answer is Missouri's 'pure comparative fault' doctrine. Under this rule, a jury assigns a percentage of fault to every party involved, and your compensation is simply reduced by your percentage. For example, if your damages are $100,000, and a jury determines you are 60% at fault for lane splitting, you can still legally collect the remaining 40% ($40,000) from the other negligent driver.

Lane Filtering at Red Lights

Context matters immensely in assigning fault percentages. 'Filtering' usually involves a biker moving at 5 to 10 mph to the front of a line of cars stopped at a red light. If you are doing this, and a driver aggressively throws their car door open to block you, they have committed an intentional, negligent act. A jury at the St. Charles County Circuit Court, St. Charles might find that the car driver's reckless action was the primary cause of your injuries, assigning them 70% of the fault, while only assigning you 30% for the initial filtering.

Splitting During Heavy Highway Traffic

Conversely, if you are splitting lanes at 55 mph while the surrounding highway traffic is moving at 15 mph, your percentage of fault will skyrocket. Insurance adjusters will argue that your excessive speed and reckless maneuvering made it impossible for other drivers to see you in their mirrors. While you can still pursue a claim, a jury is highly likely to place the vast majority of the blame on you in this high-speed scenario.

Minimizing Fault When the Car Driver Failed to Use a Turn Signal

A common scenario involves a motorcyclist lane splitting when a car suddenly merges into them without warning. Under Mo. Rev. Stat. § 304.019, all drivers are legally required to give an appropriate signal before turning or moving right or left upon a highway. If the car driver failed to use their blinker and failed to check their blind spot, they are heavily negligent. In comparative fault precedents like Gustafson v. Benda, 661 S.W.2d 11 (MO Supreme Court 1983), courts frequently weigh the combined negligence of multiple drivers. Your attorney will aggressively highlight the driver's failure to signal to drive down your percentage of fault and maximize your payout.

How Much Does it Cost in Missouri?

Motorcycle accident attorneys in Missouri work on a contingency basis, ensuring you don't have to risk your own money to fight the insurance companies.

• No Win, No Fee: You pay nothing if the attorney does not recover a settlement or verdict for you.
• Standard Percentage: Most law firms take 33.3% of the final settlement.
• Litigation Percentage: If the insurance company stubbornly denies liability due to your lane splitting and a lawsuit must be filed, the fee generally increases to 40% to cover the extra trial work.

How Long Does the Process Take?

Because these cases involve disputed liability, they take longer than standard rear-end collisions. Expect the insurance company to initially deny your claim entirely. Your lawyer will need 3 to 6 months to gather traffic camera footage, depose witnesses, and present a comparative fault argument. If the case proceeds to a lawsuit filed in a venue like the Clay County Circuit Court, Liberty, the discovery and trial process can take 12 to 24 months to conclude.

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