Intermodal container transport moves goods from ocean vessels through port terminals onto truck chassis and out to distribution points across the country. When something goes wrong on that final highway leg, whether from a chassis brake failure, a defective kingpin connection, or a container shifted by improper loading, the crash involves a defendant structure that most PI trucking practitioners never see outside the major port corridors. Understanding that structure, and locking down the evidence before the equipment re-enters the cycle, determines whether a high-value case is fully litigated or quietly settled because the chassis record has vanished.
The Intermodal Transport Structure
At minimum, four distinct parties touch an intermodal shipment before it reaches its destination: the ocean carrier (also called the steamship line) that owns or leases the container, the chassis pool company that provides the wheeled equipment the container rides on, the motor carrier (typically a drayage company operating at or near the port) that drives the combination, and the beneficial cargo owner or shipper. Port terminals and container freight stations may also be involved if improper loading or sealing contributed to the incident.
These parties are connected by a web of contracts: ocean bills of lading, chassis interchange agreements, intermodal equipment provider (IEP) agreements, and carrier contracts of service. Each contract defines maintenance obligations, indemnity structures, and insurance requirements. Obtaining the full contract chain is one of the most important discovery priorities in these cases, because it determines which party had responsibility for the equipment condition at the time of the crash.
The Chassis Pool System and Inspection Obligations
Most chassis used in port drayage operations are not owned by the trucking company. They are owned by chassis pool companies, the largest of which operate national fleets of tens of thousands of units available at major port facilities. When a motor carrier picks up a container at the terminal, it typically selects a chassis from the pool without any advance inspection beyond a brief visual check. FMCSA regulations under 49 C.F.R. Part 393 require that commercial motor vehicle equipment, including chassis, meet minimum safety standards for brakes, lighting, tires, and coupling devices.
Chassis pool operators have inspection and maintenance obligations under their IEP agreements and under the FMCSA's Intermodal Equipment Provider regulations, codified at 49 C.F.R. Part 393.3. Those regulations require IEPs to systematically inspect, repair, and maintain their chassis and to file inspection reports with FMCSA. The compliance record for a specific chassis (maintenance logs, inspection history, out-of-service records) is held by the chassis pool company and must be preserved immediately following any incident involving that chassis.
Common Failure Modes
- Brake defects. Chassis brake systems are subject to high-cycle wear in the port drayage environment, where drivers make dozens of short hauls each day. Air brake component failures, brake fade from overuse, and improper adjustment create the risk of underride crashes or rear-end collisions when a heavily loaded container combination cannot stop in time.
- Kingpin and fifth-wheel defects. The kingpin on the container and the fifth wheel on the chassis must lock securely. Worn kingpins, cracked mounting frames, or improperly adjusted fifth wheels create the risk of container separation at highway speeds.
- Tire failure. Chassis often sit in pool storage between uses, and storage degradation can reduce tire integrity without any visible indicator. Blowouts from aged or under-inflated tires on a loaded combination vehicle produce large-radius crash events.
- Landing gear collapse. A chassis with damaged or improperly adjusted landing gear may appear stable at the terminal but shift or collapse during transit, destabilizing the container load.
Preservation and Discovery
The chassis goes back into the pool within days unless immediately secured. A preservation demand must go to the chassis pool company, the motor carrier, the ocean carrier, and the port terminal within hours of the incident if possible. The demand should specifically request retention of the subject chassis, its full maintenance history file in the pool operator's system, the interchange inspection forms completed at pickup and return, and any electronic monitoring data from the chassis (telematics, ABS event data, and brake pressure logs where installed).
FMCSA roadside inspection records for the subject chassis are available through the SMS system and should be pulled immediately. A chassis with multiple prior out-of-service orders for brake or tire defects, placed back in service without documented repair, supports a negligent maintenance theory against the pool company. The motor carrier's own driver inspection report (DVIR) for that chassis, required under 49 C.F.R. § 396.13, must show whether defects were noted at pickup. If the DVIR is blank or shows no defects on a chassis that subsequently failed, the question of whether it was actually inspected is a credibility and negligence issue for the jury.
Insurance and Coverage Structure
Intermodal cases frequently involve multiple insurance towers. The chassis pool company carries general liability and equipment floater coverage for its fleet. The motor carrier holds commercial auto and MCS-90 endorsement coverage. The ocean carrier may provide indemnity coverage under its bill of lading terms. Container defects may trigger a separate cargo owner or freight insurer's involvement. Identify all towers before any settlement discussion begins.
The full trucking litigation framework, including driver qualification file discovery and ELD evidence strategy, is at lawyerstrend.com/category/truck-motorcycle. Where chassis defect rather than carrier negligence is the primary theory, the analysis connects to product liability doctrine at lawyerstrend.com/category/product-liability. Fatality cases in this context carry wrongful-death damages across multiple defendants; see lawyerstrend.com/category/wrongful-death.