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Hit by an 18-Wheeler in the Valley? Evidence That Can Disappear in Days

Posted by Oscar Longoria | Oct 07, 2026 | 0 Comments

With the Pharr-Reynosa International Bridge and other border crossings, the Rio Grande Valley sees heavy 18-wheeler traffic every day. When a truck crash happens, the trucking company and its insurer usually start investigating right away. Injured people and their families should move quickly too, because some of the most important evidence can be lost.

Evidence That Can Disappear

  • Electronic logging device (ELD) data showing how long the driver had been on duty
  • Engine control module ("black box") data showing speed, braking and throttle before impact
  • Dash camera and onboard video, which may be recorded over
  • Driver qualification and drug test records
  • Inspection and maintenance records for the truck and trailer
  • Dispatch, GPS and delivery records showing schedules and pressure to deliver
  • Surveillance video from nearby businesses, often kept for only days or weeks

How a Preservation Letter Helps

A lawyer can send the trucking company a written demand to preserve evidence. Once the company is on notice, destroying evidence can have serious consequences in court.

Federal Safety Rules Matter

Commercial truck drivers must follow federal hours-of-service limits and other safety rules. Violations, such as driving too many hours or skipping inspections, can be powerful proof of negligence.

Deadline

Most Texas truck accident lawsuits must be filed within two years, but evidence problems start much sooner.

Read more on our 18-wheeler accident lawyer page, or call 956-630-LAWS (5297) for a free consultation.

This post is general information, not legal advice. Attorney responsible: Oscar Lee Longoria Jr., Law Office of Oscar Longoria, PLLC, Mission, Texas.

About the Author

Oscar Longoria
Oscar Longoria

Oscar Longoria was born in Mission and raised in South Texas. He is a product of the La Joya Independent School District. Longoria attended South Texas College for two years before transferring to the University of Texas at Austin, where he graduated in 2003 with a Bachelor of Science in Communic...

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