Cab Sizes On Trucks. The universal terms used to describe the three sizes are Regular/Standard Cab, Extended Cab, and Crew Cab. It is important to keep in mind that pickup truck manufacturers tend to create their own names for their cab sizes.
The basic pickup truck is what used to be called the half-ton truck and is now. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner's Manual. Standard four-door trucks are generally called crew cabs, but of course, it's not entirely that easy.
And, in their upper trim levels, they have interiors that would fit nicely in a luxury vehicle.
The most basic is called "regular cab," and it usually consists of two or three seats in one single row.
Commonly found in medium duty commercial truck vehicles, this design allows supreme versatility for end users and initially comes only with the cab and chassis rails, but not cargo container, fright box, or flatbed. It's first important to explain the three common cab choices available on many modern trucks. Many people may be confused with the difference between a regular cab, a double cab truck and a crew cab truck.