GUIDE A
Straight deck
One continuous primary deck level, with open side and overhead loading access.
Open family guideTRAILER FAMILY LIBRARY
One trailer industry. Fourteen physical families.
Start with the trailer's physical architecture, then narrow by loading method, application, installed systems and configuration.
14 MAJOR FAMILIES
Choose the physical family first.
Applications, combination systems, extensions and installed components refine a trailer; they do not replace its physical identity.
01
4 accepted architectures
02Dry Van & Enclosed Freight
Enclosed freight bodies for weather protection, general freight and specialized side- or rear-loading work.
Open family guide2 accepted architectures
03Refrigerated & Temperature-Controlled
Insulated highway trailers with active temperature-control systems for single- or multi-temperature freight.
Open family guide3 accepted architectures
04Protected Open Deck
Open-deck platforms fitted with curtains, sliding bows, tarps or side kits while retaining the underlying deck geometry.
Open family guide3 accepted architectures
05Open Deck & Platform
Straight, single-drop and low-well platforms for side, rear or crane loading without a permanent enclosed body.
Open family guide9 accepted architectures
06Heavy Haul & Lowbed
Lowbed and modular systems designed around low loading height, detachable or fixed necks and specialized heavy-load support.
Open family guide7 accepted architectures
07Equipment & Loading
Trailers whose ramps, tilt decks, hydraulic tails or traveling axles create the primary equipment-loading path.
Open family guide11 accepted architectures
08Vehicle Transport
Open and enclosed carriers arranged for one or more passenger vehicles, trucks or specialty automobiles.
Open family guide6 accepted architectures
09Dump & Material Hauling
Tipping and self-unloading bodies for aggregate, demolition, asphalt, refuse and other flowable bulk materials.
Open family guide2 accepted architectures
10Agriculture & Commodity
Gravity hoppers and agricultural tenders configured for grain, seed, fertilizer and related commodity handling.
Open family guide14 accepted architectures
11Tank & Bulk
Liquid, pressure-gas, cryogenic and pneumatic dry-bulk highway tanks classified by physical state and regulatory identity.
Open family guide11 accepted architectures
12Intermodal & Container Chassis
Fixed, adjustable and self-handling chassis that carry ISO, domestic, reefer, tank and specialty container entities.
Open family guide4 accepted architectures
13Forestry
Log, pole and chip-hauling trailers built around bunks, reaches, forestry bodies and specialized unloading methods.
Open family guide6 accepted architectures
14Livestock & Animal Transport
Multi-level, ground-load, stock, equine and poultry trailers configured around animal welfare and handling systems.
Open family guide9 accepted architectures
Specialty & Project Transport
Project-specific systems for wind, vessels, precast, reels, poles and other loads whose interface defines the trailer.
Open family guideVISUAL REFERENCE A–H
Read the mechanism before the label.
Compare deck transitions, loading access and coupling mechanisms to identify the right trailer architecture.
GUIDE B
Single drop
A raised upper deck followed by one drop to a longer lower main deck.
Open family guide
GUIDE C
Double drop
Two deck transitions form a low central well between raised front and rear sections.
Open family guide
GUIDE D
Fixed-neck lowbed
The low carrying deck is permanent and the front neck does not detach for loading.
Open family guideGUIDE E
Detachable RGN
The front neck detaches from the low well to create the defining front-loading path.
Open family guide
GUIDE F
Longitudinal extension
A telescoping centre section lengthens the carrying structure and changes support spacing.
Open family guideGUIDE G
Hydraulic tail
A powered full-width rear tail creates the equipment loading path and returns to transport position.
Open family guide
GUIDE H
Traveling axle
The rear undercarriage travels relative to the deck so the platform can approach ground level.
Open family guideCROSS-FAMILY LAYER
Combination systems describe connections—not bodies.
Combination system and position never replace the physical trailer family or archetype. A combination name does not establish legal operation, axle loading, route approval or permit status in any jurisdiction.
11 controlled combination classes
- A-Train — Converter-dolly connection between trailer bodies.
- B-Train — Lead trailer carries the fifth-wheel connection for the following trailer.
- C-Train — Two connection points stabilize the following trailer through a C-dolly arrangement.
- Super-B — Recognized B-Train combination class; body architecture remains independent.
- Reverse B-Train — B-Train connection applied in a reverse body order documented by the exact build.
- STAA / Twin-Pup — Twin-pup operating class; jurisdiction and connection evidence remain separate.
- Rocky Mountain — Long-combination operating class, not a trailer body architecture.
- Turnpike — Long-combination operating class, not a trailer body architecture.
- Triple — Three-trailer operating class whose bodies retain their own physical families.
- Lead & Pup — Relative body positions; the terms do not define either body architecture.
- Twin Stinger — Vehicle-transport combination class requiring exact coupling and carrier evidence.
Position stays relational
Lead, pup, following-trailer and converter roles belong to the selected connection. They do not create a new physical family or silently duplicate a manufacturer model.
- A coupled product stays one identity when that is all the manufacturer establishes.
- Separate bodies and connections receive separate records only when the evidence supports them.
Connection hardware is not interchangeable
- Converter dolly ≠ jeep
- Jeep ≠ booster
- Booster ≠ spreader
- B-Train ≠ every lead-and-pup pairing
A name is not operating authority
One coupled manufacturer product may remain one model identity; separate lead, pup and connection records are created only when the source establishes them. A combination name does not establish legal operation, axle loading, route approval or permit status in any jurisdiction.
CANONICAL LANGUAGE
Common names lead to one physical identity.
Aliases improve discovery without creating duplicate families, models or technical pages. Ambiguous terms remain unresolved until the trailer context is known.
Established buyer language
- Step Deck / Drop Deck — Step Deck / Drop Deck
- Lowboy / Lowbed — Heavy Haul & Lowbed
- RGN / Detachable Gooseneck — Detachable Gooseneck Lowbed
- Extendable — Longitudinal Extension
- Conestoga® — Rolling-Tarp / Sliding-Bow
- Roll-Tite — Rolling-Tarp / Sliding-Bow
- WALKING FLOOR® — Moving-Floor / Reciprocating-Slat
- Landoll — Traveling / Sliding Axle
Terms that never auto-resolve
- Hydrogen Trailer — Resolve compressed tube/MEGC versus cryogenic before linking a technical canonical.
- Pole Trailer — Resolve forestry versus utility-project context before canonical selection.
- Gooseneck — Resolve coupling and operating context before canonical selection.
- Roll Tarp — Resolve side-enclosure versus top-cover mechanism before canonical selection.
Brand language stays attributed
- Conestoga® — Aero Industries; Generic architecture with Aero brand context.
- Roll-Tite — Roll-Tite; Generic architecture with brand context.
- WALKING FLOOR® — KEITH Manufacturing; Generic architecture with KEITH system context.
- Landoll — Generic architecture plus manufacturer index; never rewrite the brand as the architecture.
23 protected boundaries
- Step Deck ≠ Lowboy
- Curtainside ≠ Rolling-Tarp / Sliding-Bow
- Bottom Dump ≠ Grain Hopper Bottom
- Belt / Live Bottom ≠ Moving Floor
- RGN ≠ every Lowboy / Lowbed
- Pickup Gooseneck ≠ RGN
- Intermodal Gooseneck Chassis ≠ Pickup Gooseneck
- Super-B ≠ every B-Train
The same protections apply in family mapping, filters and future search.