Semi-trailer
Videos
A semi-trailer is a trailer without a front axle. The combination of a semi-trailer and a tractor truck is called a semi-trailer truck.
A tractor unit pulling a semi-trailer
A truck pulling a semitrailer using a trailer dolly
A 1920 advertisement for semi-trailers
Grain hopper trailer
Tractor unit
Videos
A tractor unit is a characteristically heavy-duty tow vehicle that provides motive power for hauling a towed or trailered load. The largest such vehicles are similar to locomotives. These fall into tw
Semi-trailer
…A semi-trailer is a trailer without a front axle. The combination of a semi-trailer and a tractor truck is called a semi-trailer truck (also known simply as a "semi-trailer", "tractor trailer", or "semi" in the United States). A large proportion of a…
Peterbilt 386 sleeper-cab–style commercial 6×4 tractor unit
A Leyland T45 cab-over 4×2 tractor unit
An Oshkosh M1070 8×8 Heavy Equipment Transporter (HET) tractor pulling a 5-bogie M1000 HETS trailer, carrying a slat-armored M93 Fox 6×6 NBC detection vehicle near Baghdad