18-Wheeler Blind Spots: How Truck Accidents on Salt Lake’s I-80 Happen and Who Is Liable

February 12, 2026 | Truck Accidents

Driving alongside a semi-truck on Interstate 80 is a daily reality for Salt Lake City commuters. As you pass these massive vehicles near the I-15 interchange or climb the steep grades of Parley’s Canyon, you enter zones where the truck driver literally cannot see you. 

These areas, known as No-Zones, are frequent sites for catastrophic collisions. 18-wheeler blind spots are not just inconveniences; they are deadly hazards that trucking companies often fail to manage properly. When a truck merges into your lane without warning, the sheer size difference means your car takes the full force of the impact.

A blind spot accident is rarely just an accident. It is often the result of a professional driver failing to check their mirrors or a trucking company failing to install available safety technology. 

As a Salt Lake City Truck Accident Lawyer, Parker & McConkie investigates these crashes to prove that the truck driver had the means to see you but failed to look. We hold them accountable for the negligence that turned your commute into a medical emergency.

Crucial concepts of truck visibility

• Four Danger Zones: Trucks have massive blind spots in the front, rear, and on both sides, with the right side being the largest and most dangerous.
• Driver Responsibility: Professional drivers have a heightened duty to clear their blind spots before merging, meaning I didn’t see you is not a valid defense.
• Technology Exists: Modern trucks often have sensors and cameras to eliminate these blind spots, so failing to use or maintain this equipment is negligence.

What Are the Four Primary Blind Spots of a Commercial Truck?

Commercial trucks have significant visibility limitations due to their length and height. Understanding where these zones are can help you drive defensively, but it does not absolve the truck driver of their duty to check them.

We identify the specific zone where the crash occurred to establish liability.

1. The Front No-Zone: The truck’s hood blocks the driver’s view for up to 20 feet in front of the cab, making low cars invisible if they cut in too close.
2. The Rear No-Zone: The trailer blocks the driver’s rear view entirely for up to 200 feet, making tailgating suicidal and preventing the trucker from seeing rear-end collisions.
3. The Left Side: A blind spot extends from the driver’s door to the back of the trailer, covering the adjacent lane.
4. The Right Side: This is the most dangerous zone, extending across two lanes of traffic and stretching the length of the trailer, often trapping merging vehicles.

We use diagrams and expert testimony to show the jury exactly where your vehicle was in relation to the truck. We prove that the driver made a maneuver without confirming the space was clear.

Why Is I-80 in Salt Lake City a High-Risk Zone for Blind Spot Crashes?

Interstate 80 serves as a critical freight corridor connecting the West Coast to the rest of the nation. The stretch through Salt Lake City presents unique challenges that increase the frequency of blind spot accidents. 

Heavy freight traffic mixes with local commuters, creating a dense and dangerous environment. We investigate the specific geographic factors that contributed to your accident.

• Parley’s Canyon Grades: The steep climb and descent require trucks to manage speed carefully, but slow trucks often change lanes unexpectedly to pass slower vehicles, cutting off cars in their blind spots.
• The Spaghetti Bowl: The complex interchange where I-80 meets I-15 involves multiple merging lanes and rapid exits, forcing trucks to make frequent, high-risk lane changes.
• Foothill Drive Exit: Traffic entering and exiting near the university creates friction points where trucks often lose track of smaller vehicles in their right-side blind spot.

We analyze the road design and traffic patterns. We show that a professional driver should have anticipated the merging traffic and exercised greater caution.

For more information on navigating local hazards, learn about Salt Lake City truck accidents in construction zones and the resulting enhanced liability.

How Does Utah’s Modified Comparative Negligence Law Affect You?

Defense attorneys often try to blame the victim in blind spot cases. They argue that you were hanging out in the No-Zone and therefore caused your own injury. They use Utah Code § 78B-5-818 to their advantage. This law bars you from recovering damages if you are 50% or more at fault for the accident. We fight back against these victim-blaming tactics.

1. Lane Position: We prove you were maintaining a legal lane position and speed, which gave you the right of way.
2. Passing Maneuvers: We show that you were in the process of passing the truck legally when the driver merged into you.
3. Signal Timing: We demonstrate that the truck driver failed to signal for the required duration before moving over, giving you no time to escape the blind spot.

We ensure the jury understands that driving on a public highway next to a truck is not negligence. It is the truck driver’s job to move safely, not your job to disappear.

What Are the FMCSA Regulations on Driver Responsibility?

Federal regulations impose strict duties on commercial drivers to ensure safety. The Federal Motor Carrier Safety Administration (FMCSA) sets standards that go beyond basic traffic laws. Violating these rules is strong evidence of negligence.

We look for specific regulatory failures in your case.

• Safe Loading (FMCSA 392.9): Drivers must ensure cargo is secure and does not block their view; shifting loads can destabilize the truck during lane changes.
• Pre-Trip Inspection (FMCSA 396.13): Drivers must inspect their mirrors and safety equipment before every trip; if a mirror was misaligned or broken, the driver was negligent for driving the rig.
• Lane Change Protocols: Professional standards require drivers to “rock and roll” in their seat to physically check blind spots by looking around mirrors and pillars.

We hold the driver to the professional standard required by federal law. We show that their failure to follow these rules directly caused the collision.

Modern Safety Technology

Many modern commercial trucks come equipped with advanced driver-assistance systems designed to eliminate blind spot accidents. These systems include lane departure warnings, side-view cameras, and proximity sensors that alert the driver to a vehicle in the adjacent lane. 

When a crash occurs despite this technology, it often points to a failure in maintenance or driver attention. We investigate the truck’s technological capabilities to find evidence of negligence.

1. System Deactivation: Drivers sometimes disable safety alarms because they find the beeping annoying; we check the truck’s computer logs to see if the system was active.
2. Maintenance Failure: If a sensor was broken and the company failed to repair it, the trucking carrier is liable for sending an unsafe vehicle onto the road.
3. Driver Overreliance: Some drivers rely too heavily on technology and stop checking their mirrors physically; we prove that technology is an aid, not a replacement for vigilance.

If the technology was available and working, the driver should have known you were there. If it was broken, the company failed to maintain the fleet. Either way, they are responsible.

What Critical Evidence Do We Gather in a Blind Spot Claim?

Proving a blind spot accident requires more than just your testimony. We need objective data to reconstruct the crash and prove the truck driver’s error. We move quickly to secure this evidence before the trucking company deletes or destroys it.

We collect specific items to build an unshakeable case.

1. Electronic Logging Device (ELD) Data: This records the truck’s speed, braking, and steering inputs, showing if the driver made a sudden, reckless movement.
2. Dashcam Footage: Video from the truck itself or nearby vehicles often captures the exact moment of impact and the driver’s lack of awareness.
3. Maintenance Records: We check if the truck had functional blind-spot monitoring sensors or side-view cameras that the driver ignored or disabled.
4. Driver Qualification Files: We investigate if the driver had a history of unsafe lane changes or vision problems that should have disqualified them from driving.

This evidence transforms a disputed claim into a clear case of liability. We use the truck’s own data to prove the driver was at fault.

Driver Fatigue and Blind Spot Checks

Checking blind spots requires physical effort and mental alertness. A fatigued driver is less likely to lean forward to check a mirror or turn their head to clear a lane. 

Driver fatigue is a leading cause of trucking accidents, and it plays a significant role in blind spot collisions on I-80. We investigate the driver’s schedule to find signs of exhaustion.

• Hours of Service Violations: We check the ELD to see if the driver exceeded the maximum driving hours allowed by federal law.
• Sleep Apnea History: We review the driver’s medical file to see if they suffer from untreated sleep disorders that cause drowsiness.
• Trip Timeline: We analyze the route to see if the driver was rushing to meet an unrealistic delivery deadline, leading to shortcuts in safety checks.

We connect the driver’s fatigue directly to their failure to check the blind spot. We show that a rested driver would have seen you.

Why Do You Need a Lawyer for a Blind Spot Accident?

Trucking companies have rapid response teams that arrive at the scene of a crash within hours. Their goal is to control the narrative and find ways to blame you. Trying to handle a claim against a major carrier alone puts you at a severe disadvantage.

We provide the resources and knowledge necessary to win.

• Expert Reconstruction: We hire specialists who can mathematically prove that the truck driver had a line of sight to your vehicle if they had looked properly.
• Negotiation Power: We know the value of these cases and will not let the insurance adjuster lowball you based on false comparative negligence arguments.
• Litigation Readiness: We are prepared to take the case to trial if the trucking company refuses to accept responsibility for their driver’s blind spot failure.

We level the playing field. We ensure your voice is heard against the corporate legal team.

When a semi-truck collides with a rideshare vehicle in the heart of the city, the legal path forward becomes significantly more complicated.

Discover how to navigate these intricate multi-party claims by reading our guide on truck vs. rideshare accidents in downtown Salt Lake City.

Frequently Asked Questions

Is it illegal to drive in a truck’s blind spot?

No. It is not illegal, but it is dangerous. However, being in a blind spot does not give the truck driver the right to hit you. They still have the primary duty to ensure the lane is clear before merging.

What if the truck driver says I sped up to block them?

This is a common defense. We use ELD data and physical damage analysis to prove your speed and position. Often, the physical evidence contradicts the driver’s story.

Can I sue the trucking company for not having blind spot sensors?

Possibly. While not all trucks are legally required to have advanced sensors, if the company removed them or failed to maintain them, that could be evidence of negligence.

How long does a truck accident case take?

These cases are complex and often take 12 to 24 months to resolve. We must wait for your medical condition to stabilize and for the full investigation to conclude.

Who pays my medical bills while the case is pending?

Your own Personal Injury Protection (PIP) insurance pays the first $3,000. After that, your health insurance pays. We recover these costs from the final settlement.

Don’t Let a Blind Spot Ruin Your Life

The truck driver couldn’t see you, but we do. Parker & McConkie serves accident victims in Salt Lake City, Park City, Tooele, and throughout Utah. We provide the strength, the strategy, and the dedication you need to win.

Call our team today to start your recovery.