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The term “semi-truck” refers to a vehicle with two main parts: a tractor unit and a trailer. The trailer does not support its own weight. The tractor holds the front of the trailer and bears much of its load. This partial support explains the prefix “semi.” People often call these vehicles semis, 18-wheelers, or big rigs.
Semi-trucks move goods across long distances. Freight companies rely on them for daily operations. Their structure allows for high weight limits and efficient hauling. Engineers designed them to pull heavy loads without full support underneath the trailer. The tractor supplies the power, while the trailer carries the cargo.
A semi-truck differs from other trucks in both structure and function. It includes a detachable trailer, unlike pickup trucks or box trucks. The tractor and trailer are linked through a fifth-wheel coupling. This design allows the driver to drop or switch trailers.
Semi-trucks haul more weight than most vehicles. They use multiple axles to spread the load. They also carry more wheels—up to 18—than other trucks. These features make semis better suited for long hauls and heavy freight.
Driving a semi-truck requires a special license. Operators must learn to control wide turns, long stopping distances, and trailer sway. They must also meet federal rules for rest periods and cargo limits. These demands do not apply to light trucks.
A semi-truck includes two major sections: the tractor and the trailer. The tractor holds the engine, fuel tanks, cab, drive axles, and steering axle. It powers the vehicle and pulls the trailer.
The trailer varies in design. Flatbeds carry large or irregular loads. Box trailers, also called dry vans, carry sealed goods. Some trailers have refrigeration units to keep food or medicine cold. All trailers attach to the tractor through a fifth-wheel hitch.
Together, the tractor and trailer form a system that balances weight and control. Brakes, lights, and suspension systems link across the units. These features work together to move freight across states, regions, and coasts.
Semi-trucks create hazards due to their size, weight, and limited maneuverability. They need longer distances to stop. A fully loaded truck cannot stop as quickly as a car. Drivers who cut in front of semis often risk rear-end collisions.
Blind spots around the truck also increase danger. A driver cannot see directly behind or beside the trailer. Smaller vehicles may vanish from view. Sudden lane changes near a truck can cause crashes.
High winds, sharp turns, or poor road conditions may cause rollovers. If the cargo shifts inside the trailer, the trailer may tip
Victims of semi-truck accidents may file legal claims. Injuries in these crashes often cause high medical costs and long-term harm. A claim may name the driver, trucking company, or cargo owner as responsible.
Some drivers break hours-of-service rules. Others ignore weight limits or skip inspections. Trucking companies may delay repairs or fail to train new drivers. Each violation may support a negligence claim.
Victims must gather records, photos, and witness accounts. Lawyers may also request black box data or driver logs. Courts may review past violations or safety reports.
Laws vary by state, but most allow claims for medical bills, lost income, and pain. Some cases settle quickly. Others require court action. Victims should speak with a lawyer to avoid missed deadlines or weak claims.
If a semi-truck crash caused your injury, meet with a lawyer. We help you understand your rights and review your case. Truck accidents involve complex rules. You should not handle these cases alone. A lawyer knows how to track down maintenance logs, driving records, and company policies.
If you’ve been injured in Seattle, WA, and need legal assistance, contact Davis Law Group Car Accident and Personal Injury Lawyers. Contact our legal team and schedule a free consultation with a truck accident lawyer today. We proudly serve King County in Washington and its surrounding areas. Visit our law office at:
Davis Law Group Car Accident and Personal Injury Lawyers
2101 4th Ave 1030 Seattle, WA 98121
(206) 727 4000
Hours: Open 24/7
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