Why Merging Commercial Trucks Creates High-Risk Conditions on Utah Interstates

Utah’s interstate system carries thousands of commercial trucks every day. Whether traveling along I-15 through Salt Lake City, climbing I-80 toward Parleys Canyon, or navigating I-215 during rush hour, large trucks must constantly merge into and out of traffic. While merging is a routine part of driving, it presents unique challenges for commercial vehicles that can lead to serious collisions.

Unlike passenger cars, tractor-trailers require more time, more space, and greater visibility to complete a safe merge. When drivers misjudge these limitations, the consequences can be severe.

Commercial Trucks Cannot Accelerate Like Passenger Vehicles

A fully loaded tractor-trailer accelerates much more slowly than a standard passenger vehicle. After entering an interstate or leaving a weigh station, a truck may need considerable distance to reach highway speed.

This speed difference can create dangerous situations when:

• Passenger vehicles attempt to pass on the right.
• Drivers underestimate how slowly a truck is accelerating.
• Traffic leaves little room for the truck to merge.
• Motorists suddenly brake or change lanes near the truck.

These situations often force truck drivers and surrounding motorists to make split-second decisions.

Blind Spots Make Lane Changes More Dangerous

Commercial trucks have significant blind spots on all four sides of the vehicle. Areas directly beside the cab, along both sides of the trailer, and immediately behind the truck may be completely hidden from the driver’s view.

A collision may occur if another vehicle remains in one of these blind spots while the truck attempts to merge. Passenger vehicle drivers can reduce the risk of a crash by avoiding prolonged travel alongside a tractor-trailer, particularly near entrance ramps or lane reductions.

Heavy Traffic Can Limit Safe Merge Opportunities

Busy interstates often leave truck drivers with very little room to maneuver. Congested traffic may prevent a truck from merging safely, while other drivers may be unwilling or unable to create enough space.

Common contributing factors include:

• Heavy commuter traffic.
• Short entrance ramps.
• Aggressive driving.
• Last-second lane changes.
• Following too closely.

These conditions increase the likelihood of side-impact collisions and multi-vehicle crashes.

Determining Liability Requires a Careful Investigation

Not every merging accident is caused solely by the truck driver. In some cases, another motorist may have been speeding, lingering in a blind spot, or refusing to yield reasonable space for a merging commercial vehicle.

Investigators may review:

• Dash camera footage.
• Electronic logging and vehicle data.
• Witness statements.
• Roadway design.
• Vehicle damage patterns.

Understanding how the collision developed is often critical to determining fault.

How Waddoups Law Investigates Truck Accident Claims

At Waddoups Law, our Salt Lake City truck accident attorneys understand that interstate merging collisions often involve more than a simple lane change. We examine driver actions, vehicle positioning, roadway conditions, and available evidence to determine the cause of the crash and whether negligence played a role.

Our team works to identify all contributing factors so injured clients can pursue the compensation they deserve.

Talk With a Salt Lake City Truck Accident Attorney at Waddoups Law

If you were injured in a collision involving a merging commercial truck, determining what happened may require a detailed investigation. These cases often involve complex questions about visibility, vehicle operation, and driver decision-making.

Waddoups Law represents individuals and families throughout Salt Lake City and surrounding Utah communities in serious truck accident claims. Contact us today to schedule a free consultation and learn how we can help protect your rights.

About the Author

George Waddoups

George T. Waddoups has practiced law since 1982 and is experienced in personal injury and wrongful death, with over $300 million recovered for clients. He is nominated as a Super Lawyer and a member of The National Trial Lawyers Top 100. George is committed to community service and enjoys time with his five children.