Even though we see them almost every day on the roads and highways, it's easy to still be overwhelmed by the gargantuan size of a semi-truck. It may seem odd to consider a machine as massive as a ...
So, what exactly is a semi-trailer? It's a type of trailer ... truck using a coupling system made up of two key parts: the fifth wheel on the truck and the kingpin on the trailer.
A semi-truck trailer full of Twix bars caught fire early Tuesday morning, leading to a partial closure of Loop 303. Arizona Department of Public Safety officials say the fire was reported just ...