Accident Reconstruction with Ben Railsback
When a driver is killed or too badly hurt to explain what happened, science has to tell the story. In this episode of Unthinkable, Kyle Bachus talks with Ben Railsback, a Colorado mechanical engineer and professional engineer who has spent more than two decades reconstructing car crashes for families, insurers, law firms, and government agencies.
Preserving the Evidence Early
Physical evidence at a crash scene is perishable. Tire marks, gouges in the asphalt, glass, and debris can disappear quickly. Ben’s team documents the scene and the vehicles with photos, drones, and a 3D laser scanner that captures every detail of an intersection. The point of impact is especially important because it tells the reconstructionist both where and when the vehicles met.
What Your Car’s “Black Box” Records
Nearly every vehicle on the road has an airbag control module, often called a black box. Since about 2012, these modules have recorded data that investigators can access. They constantly track speed, throttle, braking, and often steering in a short loop, then lock in roughly five seconds of data when a crash occurs. Newer vehicles may also record rollover and spin data and even still images from forward-facing cameras. That data can confirm or contradict what a driver says about how fast they were going.
Video Changes the Picture
Truck dash cameras, vehicle cameras, traffic and security cameras, and even doorbell cameras can capture a crash. By matching video frames to a 3D model of the scene, reconstructionists can determine a vehicle’s position and speed. Higher frame rates mean more precise answers.
Key Takeaways
- Don’t drink and drive. Impairment remains a leading factor in the crashes Ben investigates.
- Choose vehicles with modern safety technology, like forward collision warning and automatic emergency braking.
- Reconstruction can show not only what happened, but how a lower speed or earlier braking could have changed the outcome.
- Evidence disappears fast, so early investigation matters.
Ways to Listen
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