Truck Configurations in South Africa: Rigid, Articulated, Superlink and Interlink

A configuration is how the vehicle is put together — not what it carries. Rigid, articulated, superlink, interlink: each is a different arrangement of chassis and couplings, each has its own legal length, and each suits a different kind of work. It is the second of the three decisions behind every truck, after the body and before the axles.

New operators mix this up constantly, and it is an expensive thing to get wrong. “I run a superlink” tells you how the vehicle is coupled and nothing about what it hauls. “I run a tautliner” tells you the opposite. This guide covers the configurations recognised in South African law and on Kweli Load Exchange, what each may legally weigh and measure, and which one makes sense for a first truck.

The legal lengths, first

Configuration decides length, and length is set by Regulation 221. There are only three numbers to remember:

Vehicle type	Maximum overall length	Comments
Single vehicle	12,5 m	Excluding a semi-trailer
Articulated vehicle	18,5 m	Truck-tractor and semi-trailer
Other combinations of vehicles	22,0 m	Interlinks, multiple trailers

Rigid — one vehicle, 12,5 m

A rigid truck is a single chassis: engine, cab and cargo body all on one frame, with no coupling and nothing towed. What you see is the whole vehicle.

Rigids do distribution work — deliveries into towns, retail runs, anywhere the load is broken into drops and the destination has a tight yard. They are easier to drive, easier to park and cheaper to run, and they carry less. 60 of the trucks on Kweli are rigids, and they are the most common first vehicle for an operator moving from driving into owning.

A rigid can also pull a full trailer on a drawbar, which makes it a rigid with drawbar — a different configuration with a 22,0 m limit. One truck on the network is registered that way.

Articulated — horse and semi-trailer, 18,5 m

An articulated vehicle is two units: a truck-tractor — the horse — and a semi-trailer that rests its front end on the horse’s fifth wheel. The joint is what “articulated” means; the combination bends in the middle.

The advantage is flexibility: one horse can work with several trailers. Drop a loaded trailer, hook an empty one, and the horse keeps earning while the first is being unloaded. That is why articulated is the single most common configuration on the network, with 91 vehicles.

Superlink — horse and two trailers, 22,0 m

A superlink is a horse pulling two trailers rather than one, with the second coupled behind the first. In South African usage the lead trailer is commonly the shorter of the pair. How the second trailer couples is described differently by different suppliers, and no South African standard we can find settles the terminology — so this guide describes what the configuration does rather than asserting a mechanism it cannot source.

The extra 3,5 m over an articulated vehicle is what makes it a different business: more deck, more payload, better cost per tonne over distance. It is the long-haul workhorse of South African freight, and 64 superlinks are registered on Kweli — second only to articulated.

The cost is skill. Two trailers means two pivot points, and reversing one is a genuinely different task from reversing a single trailer — which is why so much of the driver training content in this country is about exactly that.

Interlink — the other two-trailer arrangement

An interlink also runs a horse and two trailers to 22,0 m. Regulation 221 does not distinguish it from a superlink — both fall under “other combinations of vehicles”, and TRH 11 uses the word “interlink” exactly once, in a comment, without defining it. In the trade the two words carry different meanings to different people and are often swapped. We looked for an authoritative South African definition of the coupling difference and did not find one, so we are not going to invent it.

Kweli records them separately because operators do. The split is lopsided: 64 superlinks to 2 interlinks on this network.

Road train and abnormal

Kweli’s equipment catalogue also carries road train and abnormal load as configurations. Neither is ordinary line-haul work: a road train runs more units than a superlink, and an abnormal vehicle is one whose dimensions or mass exceed what Regulation 221 allows, which means it moves on a permit with conditions attached. No trucks on the network are currently registered as either.

What the network actually runs

Configuration	Trucks	Legal length
Articulated	91	18,5 m
Superlink	64	22,0 m
Rigid	60	12,5 m
Interlink	2	22,0 m
Rigid with drawbar	1	22,0 m
Road train	0	permit
Abnormal	0	permit
Not recorded	106	—

Read the last row honestly: a third of the fleet has no configuration recorded. We publish that rather than quietly dividing by 218 and reporting cleaner percentages, because the gap is real and it belongs in your reading of the numbers.

Which configuration for a first truck?

There is no single answer, but there is a sequence that avoids the common mistake. Work from the cargo backwards, not from the truck forwards.

1. What do you intend to haul, and for whom? A confirmed customer with regular work beats a bigger truck with no contract.
2. Over what distance? Short and multi-drop favours a rigid; long-haul over hundreds of kilometres favours the payload of a superlink.
3. Can you drive it, or employ someone who can? A superlink needs a driver with the licence code and the skill to reverse two trailers.
4. What does the finance cost against what the work pays? A bigger combination earns more per trip and costs more standing still.

The fleet numbers above are a reasonable guide to where the work is. Articulated and superlink together are over two thirds of the recorded configurations, which reflects where long-haul freight volume sits — and also where the competition is thickest.

Watch

Two South African channels explaining this better than text can:

• Difference between superlink flat deck and superlink tautliner — Andries “DRIGO” Sekokotla. A useful demonstration of the point this guide keeps making: the same configuration carries different bodies, and the two words describe different things.
• Understanding superlink and interlink reversing — Bhek’muzi Trinity. Shows why two trailers is a different vehicle to drive, not just a longer one.

Linked because they are useful.

Questions people ask

What is the difference between a superlink and an interlink?
Both are a horse with two trailers, both may run to 22,0 m, and Regulation 221 treats them identically as “other combinations of vehicles”. The trade distinguishes them, but suppliers define the difference inconsistently and no South African standard we can find settles it, so we do not assert one. On Kweli, superlinks outnumber interlinks 64 to 2.

How long can a truck be in South Africa?
12,5 m for a single vehicle, 18,5 m for an articulated vehicle, and 22,0 m for other combinations, all including load projections. Width may not exceed 2,6 m and height 4,3 m.

Is a horse and trailer the same as an articulated truck?
Yes. “Horse” is the everyday word for the truck-tractor, and a horse coupled to a semi-trailer is what Regulation 221 calls an articulated vehicle, limited to 18,5 m.

Which configuration is most common in South Africa?
On the Kweli network, articulated (91) then superlink (64) then rigid (60). That is one network rather than a national count, but it matches where long-haul freight volume sits.

Can a rigid truck pull a trailer?
Yes — that is a rigid with a drawbar, and the combination may run to 22,0 m rather than the 12,5 m a rigid alone is limited to.

Where the numbers come from

• Legal lengths, width and height — TRH 11, Dimensional and Mass Limitations and Other Requirements for Abnormal Load Vehicles, 8th Revision, Pretoria 2010, Table 2.2, reproducing Regulation 221 of the National Road Traffic Regulations.
• Configuration counts — Kweli Load Exchange, real non-test vehicles, read 16 August 2026.
• Configuration categories — Kweli’s equipment catalogue, which recognises seven: rigid, rigid with drawbar, articulated, superlink, interlink, road train and abnormal.
• Scale drawings — trailer lengths from the Kweli equipment register; trailer axle counts are the measured mode of 67 recorded trailers. The tractor is drawn 6×4 as a convention, because we hold no horse-axle data and the sheet says so.

One thing we do not have a drawing for: the 12,5 m rigid. Every sheet in our set is a tractor-plus-trailer, so the rigid case is described here in words and not illustrated. It seemed better to say that than to reuse a drawing of something else.

Next

• Trucks for road freight — the hub: body, rig and axles, and how the three fit together
• Freight rates — what to charge once you know what you are running
• Kweli Load Exchange — loads matched to your truck’s body type and corridor