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Presents facts about big rig trucks, including how they work, the special equipment they need, and how they transport cargo around the country.

Examines the different types of tractor-trailers, and highlights how they work.

Explores the different features of big rigs.

There are many names for the powerful trucks we call big rigs. Semi, tractor-trailer, and eighteen-wheeler are just a few of them.

"Big rigs race down highways carrying hundreds of packages. How do they drive, turn, and slow down while carrying so much? Readers will discover the science behind how big rigs drive"--Provided by publisher.