A car turning left across an oncoming motorcycle's path at an Oceanside coastal intersection
Quick answer: Vehicle Code §21801 puts the yield duty squarely on the turning driver — they must wait until oncoming traffic, motorcycles included, is clear enough to turn safely, and keep yielding through the turn. A driver who turns across a rider is presumptively at fault. The defense never changes (“speeding / invisible”); the proof that answers it is physical and perishable.

Why this crash owns the statistics

Riders present a narrow profile that drivers' brains mis-time — and Oceanside's geometry feeds it: Coast Highway's block-after-block left turns across beach traffic, Mission Avenue's gaps, El Camino Real's big signalized crossings. The turner guesses at a gap that isn't there, and the rider pays the physics.

The statute is the rider's case

No motorcycle exception, no visibility proviso. When the defense argues speed, they're arguing a comparative percentage against a statutory presumption — a discount fight, not a fault reversal. Bring evidence and the presumption holds.

Proving the three seconds

  • Cameras — beach-district businesses watch these intersections; footage settles gap-timing instantly and cycles in days.
  • The turning car's own data — modern EDRs log speed and braking; proving they never braked converts “sudden emergency” into inattention.
  • Crush and throw analysis — impact points and distances reconstruct closing speeds better than any estimate.
  • Turn context — racing a stale yellow across oncoming traffic is a pattern juries recognize.

After the crash

These cases pair serious injuries with clean liability — which is why insurers need to discount them early. Decline the recorded statement, keep the bike un-repaired until documented, canvass the intersection within the week, and get a rider-fluent read on the percentages before anyone assigns them for you. What the case may be worth, and how long it takes, is covered honestly in the rider settlement guide.