8 Critical Steps Your Motorcycle-Truck Accident Lawyer Must Take in Los Angeles

The ELD is the single most important piece of evidence in a commercial truck accident case. Federal hours-of-service rules limit drivers to 11 hours of operation after 10 consecutive off-duty hours. If the crash occurred in hour 12 or beyond, that's a federal violation and direct evidence of negligence. Your attorney must send a preservation letter to the motor carrier, its insurer, and any third-party logistics providers within 48 hours of the collision. The letter halts the carrier's legal right to delete or overwrite ELD data. Motor carriers can purge records after 15 days in many circumstances—miss that window and the evidence is gone forever. The ELD data includes precise timestamps, location, engine diagnostics, and whether the driver was in a compliant or non-compliant status. Defense counsel will argue they lost the data inadvertently. A timely preservation letter destroys that defense and creates spoliation liability if they delete it anyway. In Los Angeles County, this step is not optional.

The Compliance, Safety, and Accountability (CSA) score is a public metric maintained by the Federal Motor Carrier Safety Administration. It measures a carrier's safety performance across seven categories: unsafe driving, hours-of-service violations, vehicle maintenance, hazmat compliance, crash history, driver fitness, and vehicle inspection. A carrier with a high CSA score—above the intervention thresholds—is operating outside federal safety benchmarks. This is not circumstantial evidence; it's a direct admission of systemic negligence. Many carriers exceed the FMCSA's critical thresholds in unsafe driving or hours-of-service violations. You can pull a carrier's CSA report directly from the [FMCSA's website](https://www.fmcsa.dot.gov/). A plaintiff's attorney uses this data to establish negligent hiring and retention. If the carrier employs a driver with a pattern of HOS violations and the crash involved an HOS violation, the carrier bears direct liability independent of the driver's actions. This is one of the most underutilized discovery tools in commercial truck cases.

Every commercial driver must maintain a qualification file (also called a 'DQF') with their employer. This file contains the driver's commercial license, medical certifications, accident history, and previous violations. Federal regulations require carriers to keep these files for as long as the driver is employed, plus three years after termination. If the driver had a history of violations, failed DOT physicals, or prior accidents, that information is in the DQF. Some carriers falsify or fail to maintain complete DQFs—that's a separate negligence claim against the carrier. Request the driver's DOT medical certification immediately. A driver operating with an expired or restricted medical certificate is operating illegally. In Los Angeles County personal injury litigation, the driver's DQF often reveals patterns that explain why this carrier hired or retained an unsafe operator. Your discovery demands should also request the driver's training records, any prior complaints, and disciplinary actions.

Motorcycle-truck collisions generate enormous physical evidence: gouge marks, cargo debris, fluid trails, vehicle damage patterns, and skid marks. This evidence disappears quickly. Roadway crews sweep and repair. Vehicles are towed and crushed. Witnesses leave. Your attorney must hire a qualified accident reconstructionist within days of the collision, not months. The reconstructionist photographs the scene, measures sight lines, analyzes vehicle damage, and calculates speeds at impact. In a motorcycle-versus-truck case, the physics heavily favor the truck—it outweighs the bike by 35,000 pounds, so the bike will show catastrophic damage while the truck shows minimal damage. This asymmetry is often misinterpreted by juries or defense experts as evidence the motorcycle was at fault. A solid reconstruction report counters that narrative with physics. The reconstructionist should also review the ELD data and HOS logs to determine whether the driver had reaction time to avoid the collision. This expert work costs $2,000 to $5,000, but it's non-negotiable in motorcycle-truck cases.

Commercial trucks undergo regular maintenance and inspection. Federal regulations mandate vehicle inspections, brake inspections, and documentation of repairs. If a crash involved brake failure, tire failure, or steering failure, the maintenance record tells the story. Request the truck's maintenance logs, vehicle inspection reports (DVIR—Driver Vehicle Inspection Report), and any documented issues with brakes, tires, coupling devices, or lighting. Carriers are legally required to repair defects that affect safe operation. If a known defect was not repaired and contributed to the crash, the carrier bears direct liability. This also supports a claim against the truck's manufacturer or parts suppliers if a defective component failed. Los Angeles has several commercial truck maintenance facilities. Subpoena records from the carrier's preferred maintenance vendor. If the carrier deferred repairs to save money, that's evidence of conscious disregard for safety.

Dispatch records reveal what pressure the driver was under when the crash occurred. Was the driver behind schedule? Did the dispatch system issue aggressive routing instructions? Were there messages or communications that indicate rush delivery? Carriers often create performance incentives that reward on-time delivery, which indirectly incentivizes speeding and hours-of-service violations. Request the driver's communication records, GPS logs, and dispatch messages. Los Angeles drivers navigating I-10, I-405, and the complex freeway system face chronic congestion that can stretch a routine two-hour delivery into a four-hour ordeal. A driver under time pressure in a truck navigating LA's worst bottlenecks—like the I-10/I-405 interchange or the 101 through downtown—is more likely to make risky lane changes, fail to account for surrounding vehicles, or misjudge sight lines. The dispatch records establish that the carrier knew or should have known the driver was under conditions that increase accident risk. This is particularly relevant if the driver was fatigued or operating near the edge of HOS compliance.

Motorcycle-truck collisions produce severe injuries: crushing injuries, road rash, internal bleeding, and often fatalities. Your attorney must retain a life care planner and medical experts early to establish the full scope of damages. The [National Highway Traffic Safety Administration](https://www.nhtsa.gov/) collects data on motor vehicle crash injuries, which can inform expert analysis of injury mechanisms. Motorcycle accident physicians understand the unique injury patterns caused by truck-versus-bike collisions. The motorcycle's damage pattern—where the impact occurred, how the frame was twisted, which parts took the primary force—correlates directly to the rider's injury mechanism. Photographs of the motorcycle at the scene, at the tow yard, and in the condition it was recovered are critical evidence. If the motorcycle's front wheel was crushed, the impact was head-on. If the rear quarter was hit, the rider likely suffered side-impact injuries to the torso and extremities. Medical experts use this damage data to rebut defense arguments that injuries were exaggerated. In California, damages include past and future medical care, lost wages, loss of earning capacity, and pain and suffering. A thorough medical foundation supports every dollar of damages.

A preservation letter is a formal legal demand that the motor carrier, driver, insurance company, and third-party vendors preserve all evidence related to the crash. The letter must be sent via certified mail and email within 48 hours of the accident. It should explicitly demand preservation of: ELD data, HOS records, GPS data, maintenance records, dispatch communications, dashcam footage if equipped, the truck itself, the motorcycle, medical records, surveillance footage from any cameras at the incident location, and all photographs taken at the scene. Once a preservation letter is served, the carrier's legal obligation to retain evidence becomes affirmative. If evidence is deleted, destroyed, or lost after receipt of the letter, that constitutes spoliation and creates a presumption that the destroyed evidence was unfavorable to the carrier. Some courts allow adverse inferences—the jury is instructed to assume the destroyed evidence would have proven the plaintiff's case. In Los Angeles County Superior Court, a spoliation claim can be worth hundreds of thousands of dollars in itself. This is your insurance policy against evidence destruction.