The short answer: A semi-truck has four main blind spots, often called “no-zones”: directly in front of the cab, along the driver’s side, a much larger zone on the passenger side that spans multiple lanes, and directly behind the trailer. These areas exist because of the truck’s size, height, and length, and a commercial driver is trained and required to check them before turning, slowing, or changing lanes. So if a trucker says they “didn’t see you, ” that usually points to a driver who failed to do their job, not a defense that clears them of responsibility.
Getting hit by a fully loaded semi-truck is terrifying, and the days afterward can feel just as overwhelming. You’re hurting, the medical bills are stacking up, and a trucking company’s insurance adjuster may already be calling to suggest the crash was somehow your fault for being in the truck’s blind spot. Take a breath. You don’t have to sort this out alone. At Horton & Mendez, your first consultation is free, with no fee unless we win. Reach out to our experienced Raleigh truck accident lawyers today.
In this article, we discuss:
– How many blind spots a semi-truck has and where they are.
– Why semi-trucks have such large blind spots.
– How to stay out of a truck’s blind spots.
– Whether “I didn’t see them” is a real legal defense.
– The evidence that shows what a driver should have seen.
– How North Carolina’s contributory negligence rule affects your claim.
How Many Blind Spots Does A Semi-truck Have?
A semi-truck has four main blind spots, and the industry often calls them “no-zones.” Because of the massive size of commercial trucks, they have numerous blind spots, with zones just in front of the truck cab, just below and behind the driver-side window, on the right side of the cab, back to the end of the trailer, and right behind the trailer. These are the areas around a vehicle that a driver is unable to see by looking at the rear-view or side mirrors. The catch is that these blind spots are much larger around commercial trucks than passenger cars.
Directly in front of the cab
A truck driver sits high above the road, so a car that pulls in too close ahead can drop out of sight. Trucks have substantial blind spots that extend 20 feet in front of them and 30 feet behind them.
Along the driver’s side
The driver’s side blind spot is the smaller of the two side zones. It extends for one lane from the mirror to the middle of the trailer. That’s part of why safety guidance tells smaller vehicles to pass on the left when they can.
The passenger side
The passenger side is the biggest blind spot on a semi-truck. This zone extends across two lanes, and truckers cannot see vehicles even with the front of the cab in the lane next to the passenger side, nor vehicles two lanes to the right for most of the length of the truck.
Directly behind the trailer
A big rig has no rear window. A car following too closely can disappear entirely. That rear no-zone reaches back roughly 30 feet, which also raises the danger of a smaller car sliding underneath the trailer in a rear-end crash.
Why Do Semi-trucks Have Such Large Blind Spots?
Semi-trucks have such large blind spots because of their sheer height, length, and width. The driver sits far off the ground, the trailer stretches dozens of feet behind the cab, and there’s no clear view straight back. That combination is what pushes the blind zones out to roughly 20 feet in front, 30 feet behind, and across as many as two lanes on the passenger side.
Mirrors help, but they don’t erase these gaps. Truck drivers have a responsibility to check the blind spots around their vehicles, and they cannot rely simply on checking their mirrors; instead, they must move their bodies to see whether another vehicle is in a no-zone.
How Can You Stay Out Of A Semi-truck’s Blind Spots?
The most useful rule of thumb is simple: if you cannot see the face of a truck driver in their side mirror, they cannot see you. Beyond that, drivers are widely encouraged to avoid lingering alongside a trailer, to pass on the left where the blind spot is smaller, and to leave plenty of room when merging back in front of a truck.
These habits lower everyone’s risk on the road, and they’re worth knowing. But there’s a second reason to understand them. After a crash, insurers like to twist this same safety advice into an argument that the injured person somehow put themselves in danger. Being in a no-zone doesn’t make a wreck your fault. The legal duty to check those zones stays with the commercial driver.
Is “I Didn’t See Them” A Valid Defense After A Blind-spot Truck Accident?
No. “I didn’t see them” describes what went wrong, but it doesn’t excuse it. Commercial drivers are trained specifically on these no-zones and are responsible for checking mirrors, signaling, and clearing a lane before they move.
Federal rules reinforce that duty. Under 49 CFR § 393.80, every bus, truck, and truck tractor must be equipped with two rear-vision mirrors, one at each side, positioned to reflect a view of the highway to the rear along both sides of the vehicle. And under the federal entry-level driver training rule at 49 CFR § 380.609, a new driver seeking a Class A or Class B commercial license must complete training from a provider listed on FMCSA’s Training Provider Registry. In other words, the law expects a trucker to know these blind spots and account for them. Failing to check a blind spot can expose a truck driver and a trucking company to liability for any accidents that result.
What Evidence Shows What A Truck Driver Should Have Seen?
Plenty, if it’s preserved quickly. Modern trucks and carriers generate a trail of proof about what the driver should have seen before the crash, including:
– Dashcam and side-camera footage from the truck.
– Onboard telematics and event data showing speed, braking, and steering.
– The driver’s training, qualification, and disciplinary records.
– The carrier’s own safety policies and internal rules on mirror checks and lane changes.
This is time-sensitive. Footage gets overwritten, and records get archived, so the sooner someone starts protecting evidence, the better. And while the truck driver is usually the most obvious defendant, an injured person may also have a claim against the trucking company that employed the driver, which often matters because the company carries far larger insurance.
Evidence disappears fast after a truck wreck. Call Horton & Mendez at 910-405-7751 for a free consultation, and we’ll get to work protecting it. There’s no fee unless we win.
How Does North Carolina’s Contributory Negligence Rule Affect A Blind-spot Claim?
It raises the stakes because North Carolina is one of the few pure contributory negligence states. If you’re found even 1% at fault, you can be barred from recovering anything at all. That’s exactly why the trucking company’s insurer works so hard to pin even a sliver of blame on you for being in the no-zone.
This is where our background changes the game. At Horton & Mendez, Injury & Car Accident Attorneys, our two managing partners are former insurance defense lawyers who once ran this very playbook for multi-state insurers, so our lawyers know how the “you were in the blind spot” argument gets built and how to take it apart. With 65+ years of combined experience across our team, we anticipate and vigorously defend against any claim that you bear any fault. From our Raleigh office at 1401 Sunday Drive, we investigate quickly, lock down the evidence, and build your case around what the driver should have seen.
Was the trucking company’s insurer quick to blame you? Call our Raleigh office at 910-405-7751 for a free consultation.
Talk To A Raleigh Truck Accident Lawyer Today
You focus on healing. We’ll handle the trucking company and its insurer. With nine offices across North Carolina and a home base right here in Raleigh, help is close by, and reaching us is simple. Call 910-405-7751 for a free consultation. You pay nothing unless we win your case.
Frequently Asked Questions About Semi-truck Blind Spots
How many blind spots does a semi-truck have?
Four main ones: the front, the driver’s side, the passenger side, and the rear, commonly called no-zones. These sit just in front of the truck cab, just below and behind the driver-side window, on the right side of the cab, back to the end of the trailer, and right behind the trailer. The passenger side is the largest.
Where is the biggest blind spot on a semi-truck?
The passenger side. That blind spot extends across two lanes, and truckers cannot see vehicles even with the front of the cab in the lane next to the passenger side or two lanes to the right for most of the truck’s length. This is why so many sideswipe and merge crashes happen on a truck’s right.
How long do I have to file a truck accident claim in North Carolina?
Generally, three years. North Carolina law typically requires that personal injury claims be filed within three years from the date of the incident under N.C. Gen. Stat. § 1-52. Wrongful death claims usually have a shorter two-year timeframe from the date of death. Don’t wait to call, though, because evidence fades long before any deadline.
What if the insurance company says I was in the truck’s blind spot?
Don’t accept that blame or give a recorded statement first. Failing to check a blind spot can expose a truck driver and a trucking company to liability, so being in a no-zone doesn’t excuse the driver’s duty. Because even 1% of fault can bar recovery in North Carolina, let us respond to the adjuster before you say anything.
How much does it cost to hire a truck accident lawyer?
We work on a contingency fee basis. Your consultation is free, there are no upfront costs, and you don’t pay us anything unless we recover compensation for you.
