Jefferson County, CO — June 7, 2025, One person was killed and one was injured in a box truck accident Saturday morning on US 285.

According to reports, an accident involving two passenger cars and a delivery box truck occurred on US 285 near Kennedy Gulch Road, and currently the cause of the crash has not yet been determined.

First responders arrived on the scene and pronounced one person deceased, while two others were transported to the hospital in unknown conditions. None of the motorists involved in the crash have been publicly identified, and its not clear which vehicle the deceased person was in, however this remains an ongoing investigation and more details ay be released in the future.

Commentary by Attorney Michael Grossman

When a crash involves multiple passenger vehicles and a commercial delivery truck—and results in a fatality—it's important to focus on what led to that outcome and who may bear responsibility. At this stage, the cause of the collision hasn’t been determined, and the limited information available leaves several critical questions unanswered.

Unanswered Questions

The incident took place on US 285 near Kennedy Gulch Road and involved two passenger cars and a box truck. That alone tells us this wasn’t a minor fender bender. What we don’t know is how the crash sequence unfolded. Was it a rear-end collision? Did one of the vehicles cross the center line? Was the truck slowing down for traffic, or was one of the cars attempting a turn?

Authorities have not released the identities of the motorists or clarified which vehicle the deceased individual was in. That’s a key detail because it helps determine the likely point of impact and potentially the initiating cause. For example, if the person who died was in a vehicle struck from behind by the delivery truck, the focus will shift toward the truck’s following distance and whether the driver had adequate time to respond.

Evidence That Will Matter

To understand how this crash occurred, investigators will need to go well beyond the initial scene assessment. Relevant evidence includes:

• Event data recorders (black boxes) from the commercial truck and any passenger vehicles equipped with them
• Dash cam or traffic camera footage, if any exists in the area
• Phone records to rule out or confirm distraction
• Brake and maintenance logs for the truck
• Statements from eyewitnesses and precise measurements from the crash scene

In similar cases I’ve handled, these types of evidence revealed everything from delayed braking to driver fatigue—issues that often don’t show up in police summaries but make a major difference in court.

Legal Considerations for Commercial Vehicles

When a box truck is involved in a multi-vehicle crash, it’s not just about what the driver did in the moment. Questions also need to be asked about the trucking company’s role. Was the driver properly trained? Were they operating under a tight delivery schedule that encouraged risky behavior? Was the truck itself properly maintained and inspected?

Commercial carriers have obligations that extend beyond those of everyday drivers. If a company failed to uphold those obligations, they may share responsibility for the outcome—not just the person behind the wheel.

Key Takeaways

• The cause of the crash remains undetermined, and it’s not yet clear which vehicle the deceased person was in.
• Determining the sequence of events will require detailed analysis of black box data, video footage, and crash scene evidence.
• The box truck’s involvement adds complexity and may raise questions about the carrier’s training, scheduling, and maintenance practices.
• Investigators will need to examine whether distraction, fatigue, or mechanical failure played a role.
• A thorough investigation is essential to identify where accountability lies and what could have been done to prevent the collision.