Straight answer first: lane splitting — riding between lanes of traffic — is not legal in Pennsylvania. Now the part insurers skip: illegality doesn’t automatically forfeit an injured rider’s claim. It becomes a comparative-fault fact, weighed against everyone else’s conduct, and Pennsylvania’s 51% rule does the math.
- The law: PA’s vehicle code doesn’t authorize riding between lanes; a splitting rider risks citation and a fault percentage. [ATTORNEY VERIFY current statutory framing.]
- The claim math: comparative negligence reduces rather than bars recovery unless the rider exceeds 50% — and a driver’s sudden unsignaled lane change into a rider carries its own heavy percentage.
- The evidence: speed differential, spacing, and the other driver’s movement decide the split — reconstruction territory, not adjuster declaration.
Related honesty for riders: helmet law and insurance elections shape claims the same way — rules first, then real-world fault math. The motorcycle practice runs that math for free.
Frequently Asked Questions
I was filtering slowly between stopped cars when a door opened into me. Doomed?
No — door-opening duties exist regardless, and slow-speed filtering into an opened door is a genuinely contested fault scenario, not a forfeit. The percentages get argued with evidence.
Will the citation against me end the civil claim?
A citation is a fault factor, not a verdict — the 51% analysis still runs on everyone’s conduct. Bring the ticket to the consultation, not to a guilty plea, before advice.
What does hiring you cost?
No attorney’s fee unless we recover; the contingency percentage and cost handling are in the written fee agreement. Consultations are free.
Hurt in a crash like this? Call (215) 464-4600 or contact us online — free, confidential consultations, contingency-fee representation.

