If you've ever been stuck behind a slow-moving semi-truck with nothing to do, you may find yourself wondering what the little door on the trailer is for.

Semi-trucks share the road with cars, and can be speed restricted. This makes it tempting to zip around them, but you should ...

This door serves as a ventilation feature, especially in refrigerated trailers, often called “reefers.” According to Central California Truck and Trailer Sales, opening this door allows air to ...

A mother and her 6-year-old child were injured Friday morning when an SUV rolled over onto their SUV on a busy stretch of ...

We've all found ourselves stuck behind a slow-moving semi-truck before, either in tight city traffic or on the highway. Every time it happens, we're left staring at the massive trailer in front of ...