The first 48 hours after a serious commercial truck crash in California decide more of the case than most injury victims ever realize. On one side of the equation, the trucking company’s rapid-response team is already at work: investigators dispatched, insurers notified, defense counsel briefed. On the other side, evidence is quietly cycling through the retention windows that will erase it.
This is a hour-by-hour look at what actually happens in those first two days.
Hour Zero: The Carrier’s Response Machine Starts
Within hours of a serious crash, most large commercial carriers activate a rapid-response protocol. What that looks like on their side:
- Field investigators dispatched to the scene, often within hours, especially for freeway crashes.
- The truck moved from the scene, sometimes with the ECM still recording.
- The carrier’s insurer opens a claim file.
- Defense counsel is retained on retainer, often before the injury victim has left the hospital.
- The driver is instructed on what to say and what not to say to law enforcement, medical personnel, and any injury victim who calls.
None of this is nefarious. It is standard commercial fleet practice. But it is why the injury victim’s side has to move at the same speed.
Hours 1 Through 6: Medical Care and Documentation
On the injury victim’s side, the first priority is medical care. Not urgent care later, not a follow-up next week, but same-day evaluation. Serious commercial truck injuries follow a specific pattern of delayed onset: traumatic brain injuries, internal bleeding, spinal injuries, and soft-tissue injuries often do not show full symptoms in the first minutes at the scene.
Same-day medical care serves two purposes. First, it protects the injured person. Second, it starts the medical record that carries the case. Insurance adjusters look for treatment gaps first, reasons to argue “not serious” second. A same-day ER visit is the foundation.
Other steps in the same window:
- Photographs of everything before the scene changes: vehicle positions, the truck’s DOT number stenciled on the cab, damage patterns, skid marks, road conditions.
- Contact information for every witness who saw the crash.
- The responding officer’s name and the report number.
- Copies of any citation issued to the driver.
Hours 6 Through 24: Reporting Obligations
Two California reporting obligations run during the first day.
California Vehicle Code §20008 requires reporting an injury or death crash to law enforcement within 24 hours if an officer did not respond at the scene. If California Highway Patrol or LAPD responded and generated a report, that ordinarily satisfies the requirement. If no officer responded, the victim (or a family member acting for them) has to file the report.
California Vehicle Code §16000 requires filing a Report of Traffic Accident (SR-1) with the California DMV within 10 days for any crash involving injury, death, or property damage over $1,000. This is separate from the police report and separate from any insurance claim. Failure to file can result in suspension of the California driver’s license.
Hours 24 Through 48: The Spoliation Letter
By the end of the first day, an attorney should be retained. By the end of the second, a formal preservation letter should be on its way to the carrier, the driver, the carrier’s insurer, any fleet telematics vendor, the shipper, and any leasing company involved.
A properly drafted litigation-hold letter demands preservation of every category of relevant evidence:
- ECM and Event Data Recorder data (subject to overwrite in subsequent ignition cycles).
- Electronic Logging Device records (six-month retention window under federal law).
- Driver Qualification File (employment plus three years).
- Vehicle inspection reports, DVIRs (three months), and annual inspections (14 months).
- Maintenance records (one year while under the carrier’s control plus six months).
- Post-accident drug and alcohol test results, and any refusal-to-test documentation.
- Dashcam and inward-facing camera footage (typically 30 to 90 day rolling buffer that overwrites automatically).
- Dispatch records, GPS and telematics data, load manifests, and cargo securement records.
- Internal communications about the driver, the trip, or the crash.
The letter also puts the carrier on notice that intentional destruction of these records after receipt is spoliation, exposing the carrier to sanctions and adverse-inference instructions from the trial court.
See also: Why Employment Law Matters In Remote Work Settings
The Government Claims Question
Every California commercial truck injury claim with any potential public-entity angle requires a separate analysis in this same window. If a Caltrans-controlled corridor, a city street with a dangerous condition, or a public-agency vehicle was involved, California Government Code §911.2 requires a formal written claim within six months. Miss that clock and the public-entity part of the case is generally barred, even though the ordinary two-year statute of limitations under Code of Civil Procedure §335.1 is still running.
Post-Accident Drug and Alcohol Testing
One other item worth locking down in the first 48 hours: post-accident testing. Federal regulation requires the carrier to conduct drug and alcohol testing when the crash involved a fatality, or when the driver received a citation combined with medical treatment away from the scene or a vehicle towed. Alcohol testing is targeted at 2 hours and must cease at 8 hours. Drug testing must cease at 32 hours. Refusal to submit is treated as a positive test result under FMCSA rules. Whether the testing was done, and the results if it was, is often decisive.
Bottom Line: The Carrier Is Already Moving. Should You Not Be?
Within hours of a serious commercial truck crash, the carrier’s rapid-response team is on the scene. Investigators, defense counsel, insurers, all activated. Every hour that passes without a preservation letter from the injury victim’s side is an hour the carrier controls the evidence trail alone.
The injury victims who recover the most in these cases are not the ones with the worst injuries. They are the ones who called an attorney the same day. Same-day preservation letters lock the ECM data, the ELD records, the dashcam footage, and the maintenance history before any of it cycles through the carrier’s retention windows.
Ravan Law offers same-day free case reviews with attorney Ted H. Ravan directly, not a case manager. Preservation letters go out within 24 to 48 hours. You pay nothing unless we recover compensation for you. If you or a family member was hit by a commercial truck injury claim situation in California, request a free consultation with California trucking accident representation today. The evidence you need to win is on a clock the carrier controls.
Attorney Advertising. Ted Ravan, Ravan Law, Los Angeles, CA. This content is general information, not legal advice and does not create an attorney-client relationship. Every case depends on its specific facts.
