Most commercial trucks carry a device that records their every move. This electronic system, often called a “black box,” captures crucial data about how a truck operates.
After a crash with a commercial vehicle, this information can reveal what really happened in the moments before impact. The data may show whether a truck driver or company violated safety rules.
What a truck’s black box records
Trucking companies install these electronic control modules (ECMs) in their vehicles to track performance and compliance. The device automatically logs several types of information that can help establish fault:
- Speed data: The system records how fast the truck traveled before the crash, which you can compare against posted limits and safe driving conditions.
- Braking patterns: The device shows when and how hard the driver applied the brakes, revealing whether they tried to avoid the collision.
- Hours of service: Federal law limits how long truck drivers can operate without rest, and the black box tracks these hours to show potential fatigue violations.
- Engine diagnostics: The system monitors mechanical issues that might have contributed to the accident.
This objective evidence often contradicts what drivers or companies claim happened during the incident.
Why you need this data quickly
Trucking companies typically overwrite black box data not long after it was recorded. Some do so after 30 days or less. Once the system records new trips, the information from your accident may disappear forever. You cannot recover this evidence once the company erases it.
Georgia law allows accident victims to prove negligence through various types of evidence. Black box data can demonstrate that a driver exceeded speed limits, ignored rest requirements or failed to brake appropriately. This information may also reveal whether a trucking company pressured drivers to violate federal safety regulations.
Getting legal help soon after your accident can preserve this critical evidence. An attorney can send a preservation letter that legally requires the trucking company to save the black box data. Without this step, you might lose the strongest proof of negligence in your case.