What Evidence Disappears After a Truck Accident?

What Des Moines, IA Victims Throughout Iowa Need to Know

Quick Answer

After a truck accident in Des Moines, IA or anywhere throughout Iowa, important evidence can begin disappearing within hours or days. Electronic logging data, dash camera footage, surveillance video, witness memories, and vehicle data may all be lost if they are not preserved quickly. Acting promptly gives your attorney the best opportunity to preserve critical evidence that may help determine what caused the crash and who should be held responsible.

What Evidence Disappears After a Truck Accident?

Unlike a typical car accident, commercial trucking companies often have extensive records and electronic data that may become unavailable if action isn't taken quickly.

That's one reason truck accident cases require immediate attention.

The sooner evidence is identified and preserved, the better the opportunity to understand exactly what happened.

What Types of Evidence Can Disappear?

Several important pieces of evidence may not exist forever.

These can include:

Electronic Logging Device (ELD) Data

Federal regulations require many commercial truck drivers to use Electronic Logging Devices.

These records may show:

Driving hours
Rest periods
Possible Hours of Service violations
Vehicle movement

Truck "Black Box" Data

Many commercial trucks contain an Event Data Recorder (EDR), often called the truck's "black box."

This information may include:

Vehicle speed
Braking activity
Throttle position
Steering input
Engine performance

This information may not remain available indefinitely.

Dash Camera Footage

Many fleets now equip trucks with:

Forward-facing cameras
Driver-facing cameras

Some systems automatically overwrite footage after a short period.

If the footage isn't preserved, it may be gone forever.

Maintenance Records

Maintenance records can reveal:

Brake problems
Tire issues
Inspection history
Repair records

These documents may become harder to obtain over time.

Driver Qualification Files

Commercial drivers must meet specific qualifications.

These records may include:

Training
Driving history
Medical certifications
Prior violations

These documents may become important depending on the circumstances of the crash.

Cell Phone Records

If distracted driving is suspected, cell phone records may help determine whether the driver was using a phone before the collision.

Surveillance Video

Nearby businesses may have captured:

The collision
Traffic conditions
Vehicle movements

Many surveillance systems automatically erase footage after only a few days.

Witness Memories

Even honest witnesses forget details.

The sooner witnesses are identified and interviewed, the more accurate their recollection is likely to be.

Why Truck Accident Cases Are Different

Commercial trucking companies often begin investigating immediately after a serious crash.

Depending on the circumstances, investigators, insurance representatives, or others may begin collecting information soon after the collision.

That is one reason injured victims should avoid waiting weeks or months before learning about their legal options.

What Should You Do After a Truck Accident?

If you've been involved in a truck accident in Des Moines or anywhere in Iowa:

Seek medical treatment.
Follow your doctor's recommendations.
Preserve photographs and documents.
Avoid discussing the accident on social media.
Speak with an experienced truck accident attorney before assuming all important evidence will still be available later.

Why Choose Lawyer Lawyer Dutton Drake & Conklin LLP?

Since 1979, Lawyer Lawyer Dutton Drake & Conklin LLP has represented injured Iowans—not insurance companies.

Our attorneys understand the unique challenges involved in commercial truck accident cases and work to ensure important evidence is identified and preserved whenever possible.

Calls are always FREE
No Fee Unless We Win
We Only Represent the Injured

Frequently Asked Questions

How long is truck accident evidence available?
Some evidence may remain available for years, while other information—such as surveillance video or electronic recordings—may only be retained for days or weeks.
Does every truck have a black box?
Many commercial trucks contain event data recorders or electronic systems that collect operating information, although the type and amount of data varies by vehicle.
Can trucking companies delete evidence?
Companies have legal obligations regarding evidence, but some electronic systems automatically overwrite information unless it is preserved.
Should I wait until I'm finished with medical treatment before calling an attorney?
Not necessarily. Because certain evidence can disappear quickly, many people choose to understand their legal options early, even while continuing medical treatment.