Cab names are not universal. Manufacturers may use different terms for broadly similar layouts, and the same name can evolve between generations.
Common cab concepts
Regular Cab generally describes a single seating row. Extended-cab concepts add rear seating or storage and may be called SuperCab or Double Cab depending on manufacturer and era. Crew Cab generally describes a larger rear seating area, while RAM also uses Mega Cab for a distinct configuration.
Why cab choice changes the truck
Cab selection can change wheelbase, seating, curb weight, payload, turning space and which bed combinations are available. It may also change which row in a towing guide applies.
How to verify
Use the model-year brochure, build documentation, owner material and physical truck. Record the manufacturer name for the cab rather than forcing every truck into one universal label.
General educational content for Canadian diesel-pickup research. Verify the exact truck, model year, certification labels, owner manual and manufacturer documentation, and obtain qualified mechanical or towing advice where appropriate.
Sources & Further Verification
Use the exact model year, VIN, truck labels and current manufacturer documentation when moving from general research to a purchase or towing decision.