A multi-injury crash involving a semi-truck and a minivan occurred late Friday morning, July 4, 2025, on US20 near milepost 380.8 south of Island Park, Idaho. According to Idaho State Police, a 40-year-old driver from Shelley was operating a 2026 Freightliner westbound when the truck reportedly veered off the shoulder, reentered the road, crossed the median, and struck an eastbound 2011 Toyota Sienna. The Toyota overturned and came to rest in the eastbound lanes. Multiple occupants of the Toyota, including adults and juveniles from Idaho Falls, were hospitalized, and one juvenile died from their injuries.
When a semi-truck crosses a median and causes this kind of harm, it’s critical to find out why the vehicle left the roadway in the first place.
Could Distraction or Fatigue Have Been a Factor?
While the exact cause of the semi-truck’s erratic movement hasn’t been confirmed, investigators will likely consider whether distraction or driver fatigue played a role. A momentary lapse in attention or drowsiness behind the wheel of an 80,000-pound vehicle can have devastating consequences. If the truck had been in continuous operation for an extended period, it would be important to review the driver’s hours-of-service logs and rest schedule.
Were There Mechanical Problems With the Truck?
Investigators should also examine the Freightliner for mechanical issues that could have contributed to the crash. Problems like brake imbalance, steering faults, or trailer sway from improper loading might explain why the vehicle left the roadway and crossed into oncoming traffic. Reviewing maintenance records and conducting a full inspection of the braking, suspension, and steering systems will be key.
What Evidence Should Be Reviewed?
To fully understand how the semi-truck ended up in the opposite lane, investigators should collect and examine data from the truck’s Engine Control Module (ECM), which can provide speed, braking, and steering input data leading up to the crash. Dashcam footage and witness statements may also help confirm the vehicle’s movement patterns. Additionally, skid marks, impact angles, and any tire failure signs should be closely analyzed.
Why a Full Investigation Is Necessary
In collisions like this, there are always unanswered questions that deserve careful attention. A thorough investigation will help clarify whether the crash stemmed from human error, mechanical failure, or a combination of factors. Ultimately, it’s the best way to get clear answers for those affected by the crash.
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