semi truck accident

There’s an object in most semi-trucks called a black box recorder. Its official name is electronic control module (ECM) or event data recorder (EDR). They’re devices installed in motor vehicles to record technical vehicle and occupant information for a brief period of time before, during, and after a crash.

According to the National Highway Traffic Safety Administration, black boxes can record the following:

  • Pre-crash vehicle dynamics and system status
  • Driver inputs
  • Vehicle crash signature
  • Restraint usage/deployment status
  • Post-crash data such as the activation of an automatic collision notification (ACN) system

Black Box’s Vital Information

Regarding semi-truck accidents, the information inside a black box recorder can be used as evidence in court against the driver. They can keep track of the following data:

  • GPS coordinate location
  • Average speed
  • Speed at time of accident
  • Acceleration rate
  • Hard braking and sudden stops
  • Cruise control usage
  • Seat belt usage
  • Length of time driving and distance
  • Driver identification

The data can also be used to recreate the accident with computer animation software.

Preserving Data

The driver and trucking company are not legally required to share this information with an accident victim. They fight hard against turning over black box recordings if they have proof the driver is liable. The company is required to give this information to law enforcement, though.

Trucking companies may overwrite or delete information from the black box recording (intentionally or by accident). Restarting the engine or driving the truck after the accident can clear black box data.

During and After an Accident

It’s crucial for semi-truck accident victims to ask if black box data can be preserved at the scene and to request the truck be towed rather than driven away.

Many black box recorders can only save data for thirty days or less. Ensuring the data is saved is crucial, and that may involve a protective order and subpoena.

If you or a loved one has been in a semi-truck accident, act now. Contact the personal injury lawyers at Silkman Law Firm Injury & Accident Lawyer today.

Author: Alex Silkman
author alex silkman

Alex Silkman is the founder and managing member of Silkman Law Firm Injury & Accident Lawyer. He focuses exclusively on personal injury and wrongful death cases, with the goal of getting truly just results for accident victims and their families.