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When a loaded semi collides with a passenger vehicle on I-75 or I-96, the truck's black box, dash cam footage, and driver logs often hold the real story of what happened. Most people don't realize that trucking companies and their insurers can legally destroy or overwrite that evidence within days of a crash, sometimes before an injured person has even left the hospital. A spoliation letter is the tool that stops this from happening, and timing matters more than most Michigan drivers ever expect.
We've seen firsthand how quickly critical evidence can vanish in trucking cases, which is why sending this letter early is one of the first things we do for our clients.
What Is a Spoliation Letter?
A spoliation letter is a formal written notice sent to a trucking company, its insurer, or another party, demanding that they preserve specific evidence related to a crash. It is not a lawsuit and it does not require a judge's signature. Instead, it puts the recipient on official notice that certain records, footage, or data must be saved rather than deleted, overwritten, or discarded.
People sometimes confuse this with a subpoena, but the two work very differently. A subpoena is a court order that compels someone to produce evidence, and it typically comes later in a case, often during formal discovery. A spoliation letter comes first. It is proactive rather than reactive, sent as soon as possible after a crash to lock down evidence before it can disappear.
Why Spoliation Letters Matter So Much in Truck Accident Cases
Commercial trucking involves layers of data and documentation that a typical car accident simply does not. Much of it lives on systems the trucking company controls, which means the company decides how long to keep it unless someone tells them otherwise. This is very different from a car accident case, where the evidence is often more static and easier to secure later.
Electronic Logging Devices and Overwritten Data
Federal law requires most commercial trucks to use electronic logging devices, known as ELDs, to track a driver's hours. These systems often cycle and overwrite older data automatically. Many people don't realize that without a preservation request, the very data that could prove a driver was fatigued or violated hours of service rules may already be gone by the time an attorney gets involved.
Dash Cam and Forward Facing Camera Footage
Many commercial carriers now equip trucks with forward facing and inward facing cameras. This footage can be some of the most powerful evidence in a case, showing exactly what happened in the seconds before impact. Unfortunately, most systems retain footage for a limited window before it gets recorded over.
Driver Qualification Files and Hours of Service Records
Trucking companies are required to maintain files on each driver, including qualification records, training history, and hours of service logs. These documents can reveal patterns of fatigue, inadequate training, or prior violations. Without a preservation request, some of these records may be updated, archived, or discarded during normal business operations.
Maintenance and Inspection Records
A truck's maintenance history can show whether brakes, tires, or other critical systems were properly inspected and repaired. If a mechanical failure contributed to the crash, these records become essential. Maintenance logs are sometimes handled by third party vendors, which adds another layer of urgency to preserving them quickly.
What Evidence a Spoliation Letter Typically Demands
A well drafted spoliation letter is specific. Vague requests are easier for a company to sidestep, while detailed requests make it much harder for anyone to later claim they didn't know what needed to be preserved. In a Michigan truck accident case, the letter often asks the carrier to preserve:
- Black box or event data recorder (EDR) data, which can show speed, braking, and steering input at the time of the crash
- Dash cam footage, both outward and inward facing, if the truck was equipped with cameras
- Driver logs and hours of service records for the days leading up to the crash
- Maintenance, inspection, and repair records for the truck involved
- Dispatch records and communication logs between the driver and the carrier
- Drug and alcohol testing results, including any post accident testing
How Quickly Should a Spoliation Letter Be Sent After a Michigan Truck Accident?
There is no single universal deadline, because retention periods vary by carrier, by system, and by the type of evidence involved. Some data can be gone within days. Other records may be kept longer, but there is rarely a guarantee. The safest approach is always to assume that time is limited and to act immediately.
A Common Misconception
Many people assume that a police report captures everything that matters. A police report is useful, but it is typically based on statements, observations, and sometimes limited physical evidence at the scene. It does not include ELD data, internal company records, or footage that may exist only on the trucking company's own systems. Relying solely on a police report can mean missing the fuller picture of what actually happened.
What Happens If Evidence Is Destroyed Anyway?
Spoliation, as a legal concept, refers to the destruction or loss of evidence that a party had a duty to preserve. Michigan law recognizes that when evidence is destroyed after a party was on notice to keep it, there can be legal consequences. The specifics of how courts handle these situations can vary case by case, so this is a topic best discussed directly with an attorney familiar with the facts involved.
One important point is that sending the letter itself creates a record. If evidence disappears after a company received formal notice to preserve it, that timeline can matter a great deal. Documentation of the request, and proof that it was received, becomes part of the case.
Who Sends the Spoliation Letter, and to Whom?
In most cases, an attorney representing the injured person sends the spoliation letter. It is typically directed to the trucking company, its insurance carrier, and sometimes a broker or leasing company if one was involved in the transportation arrangement. Identifying every relevant party can take some investigation, especially in cases involving leased trucks or subcontracted drivers.
Why an Individual Request Rarely Works as Well
An injured person can technically send a preservation request on their own, but these letters carry more weight when they come from an attorney. Trucking companies and their insurers are far more likely to take the request seriously and involve their legal teams promptly. This often leads to faster and more thorough compliance.
How LSM Handles Evidence Preservation in Truck Accident Cases
We move on evidence preservation as soon as we are brought into a truck accident case. This is not something we wait to address until later in the process. Our team understands how quickly commercial trucking data can disappear, and we treat that urgency accordingly.
When you work with our firm, you are not handed off to a single case manager and left waiting. Tony often reaches out personally to new clients, and our team stays involved throughout the life of your case. We believe that protecting your evidence early is one of the most important things we can do for you from day one.
Protecting Your Case Starts With Protecting the Evidence
A serious truck accident changes everything in an instant, and the last thing anyone wants to think about in the days afterward is paperwork or legal deadlines. Yet those early days are often when the most important evidence in a case is either preserved or lost forever. That is exactly why having someone in your corner who understands trucking evidence, and who acts on it immediately, can shape the outcome of a case long before it ever reaches a courtroom.
We have spent decades in the Berkley community, and we treat every truck accident case with the urgency it deserves from the very first phone call. Our approach is built on staying ahead of problems, not reacting to them after the fact. That proactive mindset is part of what has allowed our firm to recover meaningful results for the people we represent.
Talk to Someone Who Will Actually Pick Up the Phone
If you or someone you love was hurt in a Michigan truck accident, evidence may already be at risk of disappearing. Reach out to our team for a free consultation, with no pressure and no obligation. We will walk you through what steps to take next and start working to protect your case right away.
Liss, Shapero & Mitnick
2695 Coolidge Highway, Berkley, MI 48072
📞 248-584-1300 | Toll-Free: 1-855-LISS-LAW
This content is for general informational purposes only and does not constitute legal advice. Past results do not guarantee future outcomes. Contact LSM for guidance specific to your situation.