NEWS & REPORTS

Your Truck’s Data Recording System: Part 1

Aug 5, 2025 | Reports

Doug Marcello

 

Why It Matters

Every post-2000 truck is a rolling recording system capturing data that could save your company millions – or cost you everything in litigation.

 The Big Picture

Your vehicle’s electronic control module (ECM) records digital documentation of operations: speed, braking patterns, clutch engagement, engine load, and cruise control activation.

 How the Digital Witness Works

Continuous streaming: ECMs capture real-time data as trucks move, creating comprehensive records of vehicle performance and driver behavior.

Trigger events: The system preserves data when vehicles exceed G-force limits – hard braking, sudden impact, or dramatic speed/direction changes.

The preservation window: Manufacturers save several seconds of data on a fraction-of-a-second basis, showing exact speed approaching impact, brake application timing, and deceleration metrics.

The “last stop” feature: Some manufacturers maintain ongoing records of recent streaming data, preserving final moments even without triggering events.

The Data Destruction Trap

Here’s the problem: “Last stop” data disappears the moment you move your truck or activate the ECM post-accident.

Think about it: Once the vehicle moves or system activates, it’s no longer recording the “last stop” – data gets overwritten like recording over your wedding video.

The exception: Hard brake or sudden impact triggering events preserve data for that timeframe regardless of subsequent actions.

The vulnerability: Minor accidents—slow stops, sideswipes, minor impacts—may not trigger recording systems, leaving you without documentation when facing aggressive legal pursuit.

What’s At Stake

In today’s “jackpot justice” environment, this data represents the difference between proving minimal impact and facing inflated claims from billboard lawyers targeting minor accidents.

The Bottom Line

Your ECM data isn’t just diagnostic information – it’s your first line of defense against aggressive litigation. Every day without proper preservation protocols means gambling your company’s financial future on every mile your trucks travel.

Click on link below to see Doug’s video.

https://www.youtube.com/shorts/q0BYDhRbyYg?feature=share

About the Author

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