An 18-wheeler merged into me or swung wide on a turn. Who is at fault?

“I didn’t see you” is not a defense

Every tractor-trailer has large areas around it that the driver cannot see directly: right beside the cab, especially on the passenger side, directly behind the trailer, and in front of the hood. Safety campaigns call them the No-Zones. Truck drivers are trained on them, and trucks are required to carry mirrors so the driver can check them.

That is why a truck driver who merges into a car and says “I never saw it” has usually admitted the problem rather than excused it. Texas law allows a driver to leave a lane only when it can be done safely. A professional driver who knows where the blind spots are is expected to check them before moving over, not to assume they are empty.

The lane-change crash

The typical blind-spot crash happens on a multi-lane freeway. A truck moves right or left and pushes a car into the next lane, the wall or the shoulder, or hooks the car with the trailer and spins it. Because the car was beside the truck rather than in front of it, the truck driver may genuinely not have known the car was there until the impact. That is not the same as not being at fault.

The wide-turn “squeeze”

A tractor-trailer cannot make a tight right turn. To clear the corner, the driver often swings left first, or starts the turn from the middle of the road. A car that pulls up on the right, reading the truck’s position as room to pass, gets caught between the trailer and the curb as the truck completes the turn. Texas law expects a turning driver to begin a right turn as close as practicable to the right edge of the road, and a truck that cannot do that has to make the turn without trapping the traffic beside it — by signaling, checking the mirrors, and waiting.

What the trucking company will argue

The defense in these cases is almost always about you: that you were lingering in the blind spot, that you tried to pass on the right during a turn, that you sped up. Some of that may be partly true, and Texas proportionate responsibility means fault can be divided. You can still recover as long as you are not more than 50% responsible, reduced by your share.

The answer is evidence, and these days there is often a lot of it. Many carriers run forward and side-facing cameras, and many newer trucks have lane-departure and blind-spot warning systems that record alerts. The truck’s engine data shows speed and braking, and GPS shows its path. All of it is controlled by the trucking company, and much of it is overwritten in days unless a preservation letter reaches them first.

Where these crashes happen in Houston and El Paso

Blind-spot crashes are concentrated where trucks change lanes the most: freeway merges and interchanges on I-10, I-45, the 610 Loop and Beltway 8 in Houston, and on I-10 and Loop 375 in El Paso. Wide-turn crashes are more common on city streets, at intersections near warehouses, distribution centers, construction sites and the port, where tractor-trailers make tight turns onto roads built for cars. Delivery box trucks and garbage trucks have the same blind spots on a smaller scale, and the same rules apply to them.

A for-hire carrier hauling general freight across state lines must carry at least $750,000 in liability coverage, and many carry more. That matters in these cases, because a car pushed into a wall or under a trailer at freeway speed can leave injuries that far exceed an ordinary auto policy.

Authority: Tex. Transp. Code §§ 545.060, 545.101 (lanes; turning) · 49 CFR 393.80 (rear-vision mirrors) · Tex. Civ. Prac. & Rem. Code ch. 33 (proportionate responsibility)