Why pileups happen here
The east San Gabriel Valley is where four freeways meet in a few miles and where the Inland Empire’s truck traffic funnels toward the ports. The 10 climbs Kellogg Hill between West Covina and San Dimas with no truck lane westbound. The 57 and 60 share lanes for two miles through Diamond Bar at the Confluence, ranked the worst truck bottleneck in California and under reconstruction through 2028. The 210 carries commuters at speed from Fontana to Pasadena and has produced 30-plus-injury crashes in Irwindale. The 605 ends at the 210 after passing the 10/605 interchange in Baldwin Park, which has been under construction and lane changes for years. Stop-and-go traffic, sudden slowdowns behind a lane closure, trucks that cannot stop in the distance available, and a driver looking at a phone are the ingredients, and they are present every afternoon.
Who pays whom: how the claims are divided
California uses pure comparative negligence, so fault in a multi-vehicle crash is expressed in percentages that add up to 100. Each at-fault driver’s insurer is responsible for its driver’s share of your damages. Under California’s joint and several liability rule, every at-fault defendant is fully responsible for your economic damages, medical bills and lost wages, regardless of their percentage, while non-economic damages such as pain and suffering are divided by fault share under Civil Code section 1431.2. In practice that means we pursue every policy at once, and if one driver was uninsured or underinsured, your own coverage fills the gap.
| Situation | Where the recovery comes from |
|---|---|
| One driver started the chain | That driver’s liability policy, for every car ahead. Often the California minimum of $30,000 per person and $60,000 per crash, shared among several injured people. |
| Fault split among two or three drivers | Each driver’s insurer for its share. Economic damages can be collected in full from any at-fault driver. |
| A commercial truck involved | The motor carrier’s policy, typically $750,000 to $1 million or more, plus the broker’s or shipper’s in some cases. |
| Policies too small for the injuries | Your own underinsured motorist coverage. With several injured claimants sharing one $60,000 policy, this is common. |
| A construction zone or road condition contributed | A government claim against Caltrans or the county, filed within six months. |
The evidence that decides a pileup case
CHP officers arriving at a ten-car crash on the 10 cannot reconstruct the sequence, and the report frequently lists an “area of impact” and several parties without assigning primary fault. The insurers then each argue their driver was pushed. The case is decided by evidence that has to be gathered quickly.
- Damage patterns. A car hit from behind while stationary shows different crush and different underride than a car that was moving. Photographs of every vehicle, before repairs, are essential.
- Event data recorders. Most cars since the mid-2010s record speed, braking and throttle for the seconds before an airbag deployment. We send preservation letters before the cars are salvaged.
- Dash-cam and truck camera footage. A witness’s dash-cam or a truck’s forward-facing camera ends most arguments about sequence.
- Caltrans records. Lane-closure schedules, traffic-control plans and ramp-meter status for the day, obtained by Public Records Act request.
- The CHP report, dispatch log and photographs, plus the officers’ body-cam if the case is litigated.
- Accident reconstruction. On a serious injury we retain an engineer to reconstruct the chain from the physical evidence.
Injuries in multi-vehicle crashes
A driver in the middle of a chain is hit from behind, thrown into the car ahead, and sometimes hit again as the chain continues. Freeway speeds add energy to every impact. Whiplash and cervical disc injuries, concussions and other brain injuries, fractures of the wrist and sternum from bracing, airbag burns and knee injuries from the dashboard are all common even in cars that are driven away. Get checked the same day at the nearest emergency room, Pomona Valley, Kaiser Baldwin Park, Inter-Community in Covina, Foothill Presbyterian in Glendora, San Antonio Regional in Upland or Kaiser Fontana, and go back when symptoms develop.
Deadlines
- Two years from the crash to file an injury lawsuit.
- Six months to file a government claim if Caltrans, a county, a transit agency or a road condition is involved.
- Hours to days before truck data and camera footage are overwritten.
- Ten days for the DMV SR-1.
Why Morales Law Firm
Multi-vehicle cases reward the firm that moves first and keeps every defendant in the room. We send preservation letters within days, identify every policy including your own, and pursue them together so that no insurer can wait for the others to pay. Francisco Morales grew up in West Covina, graduated from UCLA and Loyola Law School, and worked as a certified automotive service consultant before law school, which means damage patterns and crush zones are a language he speaks. He handles every case himself, in English or Spanish. More about Francisco, or return to the main car accident page.