Here's a more detailed look at the common types of freight trucks:

• Semi-Trailers (also known as semi-trucks, 18-wheelers, tractor-trailers, or big rigs):

  These are large vehicles designed to pull trailers, and the trailer portion can be switched out based on cargo requirements. 

  • Dry Van: Enclosed trailers used for hauling non-perishable goods, protecting them from the elements. 

  • Reefer (Refrigerated Truck): Temperature-controlled trailers for transporting perishable goods like food, pharmaceuticals, and chemicals. 

• Flatbed:

  Trucks with an open, flat bed used for hauling oversized or bulky cargo that doesn't fit in enclosed trailers. 

• Step Deck:

  Similar to flatbeds, but with a lower deck closer to the ground, useful for hauling cargo that needs to be loaded or unloaded easily. 

• Box Truck:

  Smaller trucks with a box-shaped cargo area, used for local deliveries and hauling smaller loads. 

• Tanker:

  Specialized trucks with tanks for transporting liquids, including hazardous materials. 

• Other Specialized Trucks:

  • Car Carrier: Designed for transporting vehicles. 

  • Hot Shot: A low-lying flatbed trailer that can be pulled by a Class 3-6 pickup truck. 

  • Double (Tandem) Trailer: A configuration where two trailers are connected to a single truck, increasing cargo capacity.