How Do I Design My Site for Heavy Vehicle Access?

Whether you’re planning a distribution hub, transport depot, workshop, or manufacturing site, designing for truck access should be one of your earliest and most strategic considerations. 

At Attika, we’ve seen firsthand how smart, simple design decisions can dramatically improve site performance. This guide covers everything you need to know — from turning circles and canopy heights to door placements and pedestrian safety — to get your site working harder, safer, and faster. 

Start with Flow: Smart Site Layouts for Heavy Vehicle Movement 

Great access starts with good flow. For high-traffic commercial sites, a one-way system is ideal. Think of it like a racetrack — trucks enter, loop efficiently around the site, and exit without needing to reverse, swing wide, or cross paths with smaller vehicles or pedestrians. 

There are generally two layout options: 

• Looped flow: A circular route around the building. 

• Straight-through flow: Vehicles enter from one side and exit another. 

Sites like Cleanline Tasman and Carter Tyres demonstrate both approaches.  

At Cleanline, a looped access system keeps trucks moving smoothly and avoids congestion. Carter Tyres uses a straight-through layout that channels heavy vehicles efficiently from street to street — no turning back required. 

Don’t overlook light vehicles. Separating car and truck traffic significantly reduces the risk of collisions and keeps everyone safer. Sites like Cleanline Tasman have introduced dedicated carparks and entry points for staff and visitors, while reserving wide accessways solely for trucks. 

For a deeper dive into optimal span widths, bay sizing, and structural efficiency, check out this article on designing efficient industrial buildings. 

Turning Circles: The Invisible Rule That Shapes Everything 

One of the most overlooked design constraints is also one of the most critical: the turning circle. If a truck can’t turn efficiently on your site, it may be forced into repeated reversing or three-point turns — movements that can cause unnecessary wear and tear on your sealed surfaces, reduce operational efficiency, and create safety risks.

According to the NZ Transport Agency's RTS 18 standard, a combination truck and trailer (often referred to as a "truck and trailer unit") should be able to complete a full 360-degree turn within a 25-metre kerb-to-kerb diameter. That’s the minimum benchmark for most common freight vehicles.

But not all heavy vehicles are the same. For example:

• Semi-trailers typically have a wider turning circle due to their single articulation point.

• Truck and trailer units are longer and more rigid, requiring careful planning for reversing and manoeuvring.

• B-trains, while longer overall, often have tighter turning capabilities due to their dual articulation and more flexible tracking.

This is why early engagement with freight operators is so important. They’ll confirm what vehicle types you need to design for — and what that means for things like turning radii, swept paths, and manoeuvrability.

You can find official tracking curves and minimum design requirements in NZTA’s RTS 18 standard, which governs heavy vehicle movement design across New Zealand.

 Download RTS 18 here. 

Doors That Fit the Job 

A standard height of 5 meters and width of 5 meters works well for most freight operators. But in truck workshops or logistics sites, space along the walls can be more valuable than door width. In these cases, a 4-metre-wide door may be used instead — gaining wall space without compromising function. 

It’s all about knowing what’s moving through your building. If you’ve got high-cab trucks or container lifts, you'll need to allow for that extra height. 

Canopy Design: Don’t Skimp on Shelter 

Your canopy is your first line of defense. Designing the right size canopy depends on what happens underneath it. 

Here’s a quick breakdown of canopy widths and what they’re best for: 

• Up to 10 metres: Basic shelter or weather protection for stock and deliveries. 

• 12–15 metres: Minimum working space for forklifts during loading/unloading. 

• 15–16 metres: Provides space for product/racking on both sides and easy access for swing-lift container trucks. 

• 18–20 metres: Ideal for high-volume dispatch operations or irregular freight. 

Height also matters. If you’re using swing-lifts, you’ll need at least 6.5 metres of clearance to operate safely. 

We always recommend involving your freight partners early. Their container handling methods, trailer heights, and preferred load positions will influence everything from canopy dimensions to column placements. 

Weighbridges: Plan Placement With Precision 

If your operation involves weighing vehicles, you’ll want to get the weighbridge placement right from the outset. Flush-mounted weighbridges may look tidy, but they often collect dust, water, and debris — which means more downtime and more maintenance. 

At Attika, we often recommend above ground weighbridges on a clean, level hardstand. This simplifies installation and allows for easier cleaning and servicing. 

Crucially, weighbridges should be approached in a straight line. Avoid positioning them on bends or tight entry points — even skilled drivers can misjudge and roll off the edge when turning. 

Safety First: Designing for People, Not Just Trucks 

Heavy vehicle access shouldn’t compromise safety. Every good site plan builds layers of protection for people moving on foot. 

Here’s what we look for: 

• Pedestrian footpaths or crossing zones clearly marked and physically separated where possible. 

• Bollards, barriers, or low fencing to create a visual and physical divide. 

• Gates set back from the street to avoid trucks blocking traffic while waiting for access. 

• Good lighting for early morning or after-hours movements. 

Planning with safety in mind isn’t just the right thing to do — it also reduces liability, ensures compliance with WorkSafe guidelines, and builds long-term trust with staff and suppliers alike. 

Collaborate Early, Avoid Pain Later 

No one knows your freight flow like the people moving it every day. That’s why our design team encourages collaboration with operators, drivers, dispatch managers, and logistics partners from day one. 

They’ll often reveal things you hadn’t thought of — like the need for trailer swing space, specific ramp gradients, or how wind affects container unloading. 

And it’s not just about big rigs. Courier vans, utes, forklifts — each vehicle has its own needs. A great site design considering them all. 

The Attika Difference 

We don’t just design for trucks — we design for business growth. Every accessway, turning circle, and canopy should serve a bigger purpose: helping you run a more efficient, productive, and future-proof operation. 

That’s the Attika way. Smart simplicity. Clear resolution. A team that takes on the hard stuff, so you don’t have to. 

If you’re ready to create a site that works as hard as you do, let’s talk. Or start with our free budget estimator tool to see what’s possible. 

Ready to talk about your site? Book a consultation or get in touch here