Truck Accident Investigation Process in San Diego

A truck accident investigation should establish how the crash happened, why it happened, and who was responsible. That requires more than accepting the driver’s account or relying on the police report. Vehicle inspections, electronic data, company records, witness testimony, and expert analysis can reveal causes that were not apparent at the scene.

Our San Diego truck accident attorneys preserve the evidence and test the explanations offered by the driver and trucking company. In one dump truck case, that work revealed that the driver had several safe ways to relocate his truck despite claiming he had been directed to back immediately.

What You Can Do Now

You do not need to investigate the trucking company yourself. These steps can help protect your health and preserve information while an attorney handles the evidence held by others:

• Get medical care and keep your records. Follow treatment recommendations and save bills, discharge instructions, and records of missed work.
• Save photographs and contact information. If safely available, keep images of the vehicles, company names, license plates, USDOT number, and scene. Photographs taken by witnesses or family members may help too.
• Get advice before a recorded statement. Speak with an attorney before giving the trucking company’s insurer a recorded statement. Report the crash promptly to your own insurer and comply with your policy’s notice and cooperation requirements.
• Request the police report. Contact the investigating agency. Eligible requesters can obtain a CHP report using form CHP 190. You do not need to wait for the report before seeking legal help.

Some complex crashes receive a specialized investigation by a CHP Multidisciplinary Accident Investigation Team. Even a detailed police investigation may leave questions about company decisions, maintenance, or contracting relationships for the civil case to address.

Testing the Driver’s Account

In a case handled by Conor Hulburt, a worker suffered a crushed right knee when a dump truck backed into him. The driver initially claimed that someone on the jobsite had directed him to back immediately and that jobsite rules prevented him from leaving the cab.

Conor deposed the person who spoke with the driver, along with workers and supervisors on the site. Their testimony clarified that the driver had been told to move to another location up the street behind him. The instruction identified a destination; it did not require him to reverse directly to it.

The investigation also established that the rule requiring the driver to remain in his cab applied while equipment was loading debris into the truck bed for his safety. It did not prevent him from getting out to check behind the truck before moving.

The dump truck had no backup camera, and the driver could not see directly behind it. Conor worked with a trucking expert and reviewed the California Commercial Driver Handbook’s safe-backing instructions. The investigation established the precautions required in those circumstances: walking around the entire truck to check the path before backing, or obtaining a spotter’s all-clear after signaling for assistance. The DMV’s truck-driving guidance also emphasizes avoiding backing when possible, checking the path, and using a helper when available.

Using drone footage, Conor created overhead scene reconstructions showing the driver’s other options, including pulling forward and driving around the block. Those diagrams made the alternatives easy to understand.

Establishing the driver’s negligence, together with the larger carrier’s responsibility for its subcontractor, resulted in a significant policy-limits settlement. The truck accident liability article explains the separate work needed to identify and hold that carrier responsible.

Preserve Evidence Before It Changes

The truck, trailer, electronic records, and company documents may be controlled by several businesses. Early investigation should identify who holds each source and what could be repaired, deleted, overwritten, or lost.

Preservation demands should be tailored to the crash and directed to the appropriate carrier, vehicle owner, insurer, tow yard, and other custodians. They may cover the vehicles and damaged components, camera footage, electronic data, driver and dispatch records, maintenance history, and cargo documents.

Some federal retention periods are short. For example, 49 CFR § 395.8(k) generally requires retention of driver duty-status records and supporting documents for at least six months. That minimum does not authorize destruction of evidence that must be preserved for reasonably foreseeable litigation.

A preservation letter is an important step, but follow-through matters. Counsel may need to confirm that electronic overwriting has stopped, arrange an inspection, and obtain agreement about handling the truck and its components. Intentional concealment or destruction can also raise issues under CACI No. 204, Willful Suppression of Evidence.

If cooperation fails, court intervention may be necessary. A pre-suit preservation petition is available when statutory requirements are met, including a present inability to bring the anticipated action. CCP § 2035.030 describes those requirements. In other circumstances, filing suit and seeking appropriate preservation or discovery orders may be necessary.

Inspect the Truck and Download Data

A physical inspection can document collision damage, brakes, tires, steering, lights, coupling equipment, and cargo restraints before repair or salvage changes the evidence. The inspection should address the suspected cause rather than follow the same checklist in every case.

Electronic evidence may come from engine or vehicle control modules, event-recording systems, cameras, GPS, fleet platforms, and electronic logging devices. Depending on the system, it may show speed, braking, throttle use, vehicle movement, routes, or driver duty status.

Not every truck records the same information. A qualified expert should determine what is available, preserve it appropriately, and explain its limitations. The timing of a recorded event, the system’s settings, and the condition of its sensors can affect what a data point means.

Vehicle data is most useful when compared with physical damage, scene measurements, video, and witness accounts. The approach will differ among the types of truck accidents involved, such as backing collisions, rollovers, jackknifes, and underrides.

Examine Driver and Company Records

Company records can explain the decisions that put the driver and truck on the road. The investigation should focus on the issues suggested by the evidence.

Fatigue and dispatch pressure

Compare driver logs with GPS, fuel receipts, delivery records, and dispatch messages. These sources may reveal discrepancies in recorded hours or schedules that encouraged unsafe driving.

For covered property-carrying drivers, 49 CFR § 395.3 generally allows up to 11 driving hours after 10 consecutive hours off duty and limits driving to an applicable 14-hour window, with other limits and exceptions. A driver can still be dangerously fatigued without a technical hours-of-service violation. Our FMCSA regulations guide explains the broader safety framework.

Qualifications and prior warnings

The driver qualification file and required background inquiries can show licensing history, qualifications, and whether the carrier investigated prior safety problems. Training and disciplinary records may reveal what the company knew and how it responded.

The relevance of hiring or supervision evidence depends on the claims and admissions in the case. Our discussion of Diaz v. Carcamo explains how an employer’s admission of responsibility for its driver can affect separate negligence theories.

Maintenance and loading

Compare the truck’s condition with inspection reports, repair orders, driver-reported defects, and outside service records. 49 CFR § 396.3 requires covered carriers to systematically inspect, repair, and maintain their vehicles. The key questions are whether a dangerous condition existed, who knew or should have known about it, and whether it contributed to the crash.

When cargo shifts, spills, or affects stability, investigate who loaded it and how. Bills of lading, weight tickets, photographs, warehouse video, and securement equipment can help test compliance with federal cargo-securement requirements.

The companies behind the shipment

Contracts, leases, operating authority, and dispatch communications help distinguish the carrier, equipment owner, broker, shipper, and loading or maintenance contractor. Those relationships affect responsibility and the insurance coverage available.

Company safety policies and relevant prior incidents may warrant review. Covered carriers generally must maintain the accident register required by 49 CFR § 390.15 for three years after a qualifying accident.

Find Video and Interview Witnesses

Dash cameras, nearby businesses, homes, construction sites, and other vehicles may have recorded the collision or events leading to it. Identify camera locations promptly because recording systems may overwrite older footage.

Witness interviews should establish what each person actually saw or heard. Who gave an instruction? What words were used? Where was the witness standing? Could that person see the area behind the truck?

Depositions allow counsel to question witnesses under oath and compare their accounts with records and physical evidence. As the dump truck case illustrates, a precise explanation of an instruction or safety rule can change the assessment of fault.

Police findings remain an important starting point. Our San Diego truck accident statistics summarize reported collision patterns, but responsibility in an individual case must be established through its own evidence.

Distraction and Impairment

When distraction is suspected, examine available phone records, messages, in-cab video, dispatch communications, and witness observations. A record of phone activity must be connected to the driver and the relevant time; its existence alone does not establish distraction. Federal rules restrict texting and handheld phone use by covered drivers.

Post-crash drug and alcohol testing depends on the operation and the circumstances. For drivers covered by Part 382, 49 CFR § 382.303 requires testing of surviving drivers performing safety-sensitive functions after a fatal crash, without a citation requirement.

For a crash involving immediate medical treatment away from the scene or disabling vehicle damage requiring towing, the rule requires testing when the commercial driver receives a crash-related moving-violation citation within eight hours for alcohol or 32 hours for drugs.

Investigators should obtain results and required explanations for delayed or missed tests, and determine whether the testing obligation applied. No test does not mean no impairment. Conversely, a positive result must be evaluated carefully before drawing conclusions about impairment or causation.

Connect the Evidence to the Crash

An expert can reconstruct vehicle movements using inspections, electronic data, photographs, scene measurements, roadway geometry, and witness testimony. The analysis should test competing explanations and show how a particular failure contributed to the collision or injury.

For example, incomplete maintenance records alone do not establish that bad brakes caused a crash. An unresolved brake complaint, a physical defect, inadequate deceleration in the vehicle data, and supporting reconstruction can together establish that connection.

California’s substantial-factor causation standard is addressed in CACI No. 430. A safety-rule violation may also support a rebuttable presumption of negligence when the requirements of Evidence Code § 669 are met. The investigation must connect the rule, the violation, and the harm.

Why Early Investigation Matters

The filing deadline and the practical deadline for preserving evidence are different. CCP § 335.1 generally provides two years for California personal injury claims, subject to exceptions. Records and video may disappear much earlier.

If a dangerous public roadway contributed to the crash, a government claim generally must be presented within six months under Government Code § 911.2. Identifying the responsible entity and investigating the road should begin promptly.

Hulburt Law Firm

Conor and Leslie Hulburt represent people and families after serious truck and commercial vehicle crashes throughout San Diego County. We accept a limited number of cases so each receives direct attorney attention, focused investigation, and preparation for trial.

Our work is to uncover what happened, establish who was responsible, and present the evidence clearly enough to withstand the defense and persuade a jury.

Call (619) 821-0500 or contact Hulburt Law Firm for a free, confidential case review. There is no attorney fee unless we recover compensation for you.