A commercial truck accident can produce more evidence than a regular car crash. Key documents like driving logs, dispatch messages, inspection reports, maintenance records, driver qualifications, and company crash reports can help explain what happened before and during the accident. Federal rules require trucking companies to keep many of these records, but they are not required to keep them forever.
This difference is important after a serious accident. Some records must be kept for only a few months, while others can be kept for years. If a trucking company follows its usual schedule for keeping records, it might delete important documents once the required time passes. Knowing which materials are relevant early on can impact how much evidence is still available if a dispute turns into a lawsuit.
Federal Retention Periods Vary Considerably
Federal Motor Carrier Safety Administration regulations do not impose one universal retention period on trucking records. The required period depends on the type of document. For example, FMCSA requires carriers to retain electronic records of duty status and supporting documents for six months, while certain driver vehicle inspection reports need to be kept for only three months.
Other documents remain longer. Current federal rules require qualifying vehicle inspection, repair, and maintenance records to be kept for one year while the vehicle remains under the carrier’s control and for six months after it leaves that control. Driver qualification files generally remain throughout employment and for three years afterward.
| Trucking Record | Federal Retention Requirement |
| ELD records of duty status | 6 months |
| Hours-of-service supporting documents | 6 months |
| Required driver vehicle inspection reports | 3 months |
| Vehicle maintenance records | 1 year while vehicle remains under carrier control; 6 months after it leaves |
| Driver qualification file | Duration of employment plus 3 years, subject to rules allowing certain documents to be removed earlier |
| Carrier accident register | Crashes occurring during the previous 3 years |
The table outlines federal recordkeeping requirements but does not include every document related to an accident. Company policies and other laws may also affect how long certain records must be kept.
Electronic Logs Can Age Out After Six Months
Electronic logging device data can be central when a truck driver’s hours become disputed. ELD records document duty status, including driving and other recorded work periods. FMCSA states that motor carriers must retain ELD records of duty status for six months and maintain a separate backup copy for the same period.
ELD records can also preserve changes made after the original entry. FMCSA explains that original electronic records remain retained when permitted edits or annotations are made. That information can help distinguish the original log from later modifications, but the federal six-month retention window still makes timing relevant when those records may matter to an accident investigation.
Supporting Documents Can Reveal More Than the Driving Log
Hours-of-service investigations are not limited to the ELD itself. FMCSA identifies several categories of supporting documents used to verify records of duty status, including bills of lading, schedules, dispatch and trip records, certain expense receipts, electronic fleet communications, and payroll or settlement records. Carriers generally must retain qualifying supporting documents for six months.
These records can provide an independent timeline of a driver’s workday. Dispatch information can show trip activity, while electronic communications may contain time and location information. Comparing supporting records against ELD entries can help investigators determine whether the different sources describe the driver’s activities consistently.
Inspection Reports May Have One of the Shortest Retention Periods
Post-trip inspection documentation can become relevant when mechanical condition is questioned. Under current 49 C.F.R. § 396.11, drivers generally prepare a written driver vehicle inspection report when they discover or are informed of a defect or deficiency that could affect safe operation or cause a mechanical breakdown. The report can cover brakes, tires, lighting, coupling devices, wheels, steering equipment, and other safety components.
Federal rules require qualifying reports, repair certifications, and driver-review certifications to be retained for only three months. When an Austin 18-wheeler accident attorney investigates whether a mechanical problem existed before a collision, an earlier inspection report could help establish when the defect was first recorded and what the carrier did about it. Waiting beyond the regulatory retention period can make obtaining older reports more difficult if no separate preservation obligation applies.
Maintenance Records Can Show a Vehicle’s Mechanical History
FMCSA requires motor carriers to systematically inspect, repair, and maintain vehicles under their control. Required records identify the vehicle, indicate scheduled inspection and maintenance operations, and document the dates and nature of inspections, repairs, and maintenance performed.
As of the current federal regulation, these records must remain where the vehicle is housed or maintained for one year and then for six months after the vehicle leaves the carrier’s control. Maintenance documentation can become particularly relevant when a crash involves allegations concerning brakes, tires, steering, suspension, coupling equipment, or another component whose condition may have developed over time.
Driver Qualification Records Have Their Own Retention Rules
A driver’s qualification file can provide information that is not found in the accident report. Under 49 C.F.R. § 391.51, the file may contain the driver’s employment application, motor vehicle records, road-test documentation, annual driving-record reviews, and qualifying medical documentation. The carrier generally keeps the file while the driver remains employed and for three years afterward.
Not every item necessarily stays for that entire period. Section 391.51 allows specified records, including annual motor vehicle records, annual-review notes, and certain medical qualification documents, to be removed three years after execution. Drug and alcohol records also follow separate schedules: federal regulations require some violation records for five years, certain collection-process records for two years, and negative or canceled test results generally for one year.
Carriers Also Maintain a Three-Year Accident Register
FMCSA requires motor carriers to maintain an accident register covering qualifying crashes from the previous three years. According to the agency’s Motor Carrier Safety Planner, the register includes information such as the crash date, nearby city or town and state, driver’s name, number of injuries or fatalities, and whether specified hazardous materials were released.
That register can help identify whether the same carrier or driver has been involved in other reportable crashes during the retention period. It does not by itself establish negligence in a later accident, but it can point investigators toward additional incidents and records that may warrant closer examination.
Preservation Duties Can Become Different From Routine Retention Rules
A regulatory retention period establishes how long a carrier must ordinarily keep a particular record under federal transportation rules. It does not necessarily determine whether evidence can be destroyed once litigation is reasonably anticipated. Texas courts separately recognize the doctrine of spoliation when relevant evidence that had a duty to be preserved is lost or destroyed.
In Brookshire Brothers, Ltd. v. Aldridge, the Texas Supreme Court explained that loss or destruction of evidence can deprive a factfinder of information needed to decide a case and established standards governing spoliation remedies. The decision illustrates why routine deletion policies and litigation-related preservation are different questions. Once evidence preservation obligations arise, simply pointing to an ordinary company retention schedule does not resolve the spoliation analysis.
Early Preservation Can Protect a More Complete Record
A truck crash investigation may need information from various areas, including the driver’s working hours, dispatch activities, vehicle inspections, repair history, employment qualifications, and past crashes. The rules for retaining these records vary, lasting from months to years.
Keeping records early does not explain why a collision occurred but protects the evidence needed to find out. Knowing what documents exist, who has them, and the required retention periods helps ensure that an investigation starts before important records are lost.