1. How Long Are Tractor Trailers?
A typical tractor-trailer (the truck and trailer combined) is about 72 feet long. The Federal Highway Administration set regulations in 1982 that require the trailer of a semi-truck to be at least 48 feet long. In Texas, a semi-trailer can go up to 59 feet in length, while each trailer in a twin setup is limited to 28.5 feet.
2. How Wide is a Tractor Trailer?
The Federal Aid Highway Act of 1956 limited the width of commercial vehicles to 96 inches on interstate highways. Then in 1982, the Surface Transportation Assistance Act (STAA) expanded that width to 102 inches, covering both interstates and the national highway system.
3. What is the Height of a Tractor Trailer?
While there isn’t a federal height restriction, in Texas, the maximum height for any vehicle is 14 feet. This limit helps ensure trucks can safely pass under bridges and overpasses. Routes with lower overpasses will have signage to warn of height restrictions, and trucks taller than allowed must find alternative routes.
4. How Much Does a Tractor Trailer Weigh?
A tractor-trailer’s weight depends on whether it’s carrying cargo or not. According to J.D. Power, an empty rig weighs around 35,000 pounds. When fully loaded, a tractor-trailer can weigh up to 80,000 pounds, which is roughly 20-30 times heavier than a regular passenger vehicle. Texas law caps the maximum weight of a loaded tractor-trailer at 80,000 pounds.
5. How Many Axles Does an 18-Wheeler Have?
An 18-wheeler typically has five axles: four on the trailer and one on the tractor. The four trailer axles each support four wheels, while the steering axle on the tractor supports two wheels. Under Texas law, a single axle can carry up to 20,000 pounds, while a tandem axle can hold up to 34,000 pounds.
6. How Many Gears Does a Tractor Trailer Have?
A standard semi-truck usually has 12 gears, with 10 forward and two reverse gears. Depending on the model, a semi can have anywhere between 9 and 18 gears.
7. Who Can Drive 18-Wheelers?
To legally drive an 18-wheeler in Texas, you need a Commercial Driver’s License (CDL). If you plan to drive across state lines, you must be at least 21 years old. Once you’ve obtained your CDL, you’re certified to operate large commercial vehicles and buses.
8. What Regulations Must Commercial Truck Drivers Follow?
Truck drivers have specific rules set by the Federal Motor Carrier Safety Administration (FMCSA) known as Hours-of-Service (HOS) regulations. These rules govern how many hours drivers can be on the road. For instance, truckers hauling cargo are limited to driving 11 hours after taking a 10-hour break and must log their hours in a logbook.
9. Do 18-Wheelers Have a Higher Risk of Crashing?
Due to their size and weight, 18-wheelers are at higher risk for accidents. They consist of two parts (tractor and trailer), which can detach or jackknife. Common accidents include jackknifing, rollovers, and rear-end collisions, as trucks require more time and space to stop compared to passenger cars.
10. How Can an Austin Truck Accident Lawyer Help?
If you’ve been involved in an accident with an 18-wheeler, an experienced Austin truck accident lawyer can help gather evidence to prove the truck driver’s liability. They’ll also know how to present your case in court and help you get the compensation you deserve. Reach out to a local attorney if you need legal representation after a truck accident.