Load securing and vehicle weights: safe loading, restraint and plated limits

Load securing is the legal duty to restrain everything on the vehicle so it cannot move during normal driving or an emergency stop, and it sits alongside the equally hard rule that you never exceed your plated weights on the axles, the gross or the train. Get either wrong and you are looking at a prohibition at the roadside, a fine, and a black mark that follows you to the traffic commissioner. I have watched a perfectly profitable load turn into a curtailed licence because a driver trusted the curtains to hold a stack of blocks. They do not.

This guide covers the law behind both duties, the physics you actually have to plan for, how lashings and headboards do the work, and how overloading and insecure loads are penalised. The numbers here matter, so I have kept them tight to the current DVSA guidance.

The legal duty: where load securing law comes from

There is no single “load securing offence” with a tidy section number. The duty is built from several places that all point the same way. The Road Traffic Act 1988 makes it an offence to use a vehicle in a dangerous condition, and an insecure load is a dangerous condition. The Road Vehicles (Construction and Use) Regulations 1986 require that a load is carried so it cannot fall off, shift dangerously, or cause danger to anyone. On top of that sits the DVSA guidance, Securing loads on HGVs and goods vehicles, which replaced the older code of practice and was substantially updated in December 2024.

That guidance is not law in itself, but DVSA and the courts treat it as the standard a reasonable operator should meet. If your method matches it, you are on solid ground. If it does not, you are explaining yourself. Responsibility is shared: the operator must provide suitable vehicles and equipment and a safe system of work, the driver must check the load is secure before and during the journey, and the consignor who loads has a duty to load safely and tell the driver what they are carrying. None of those parties can fully pass the blame to another.

Load securing: the basics you have to plan for

This is the part operators get wrong, so it is worth stating plainly. A load does not just need holding down. It needs holding in place against the forces that build up when the vehicle brakes, corners and accelerates. DVSA sets the planning rule in terms of the load’s own weight.

The restraint system must be able to resist:

• The full weight of the load acting forwards. Under heavy braking, the load is thrown towards the cab with a force roughly equal to its entire weight. A two tonne load needs two tonnes of forward restraint.
• Half the weight of the load acting sideways, and half acting rearwards. Cornering and acceleration are less severe than an emergency stop, so the sideways and rearward figure is about half the load weight, but it is still substantial.

In engineering shorthand that is roughly 1g forwards and 0.5g to each side and the rear, but you do not need the physics to apply it. Look at the load, work out its weight, and make sure the restraint in each direction can hold those proportions. Friction helps: a clean, dry, anti-slip surface reduces how much restraint you need. But DVSA is clear that friction on its own is never an acceptable securing method.

The headboard is the single most useful part of the system. Load stacked tight against a sound headboard, with the centre of gravity kept low, deals with most of the forward force without a single strap. That is why the gap matters: if the load cannot reach the headboard, or cannot reach the rear, the straps or chains have to make up the difference, and you need more of them. Keep any gap to the curtains within about 80mm and fill voids so nothing can build up momentum before it hits a restraint.

Rated lashings, EN 12195 and doing the sums

Every strap and chain has a rated working strength, and that is the only number that counts. For webbing lashings the relevant standard is EN 12195-2, and the rated figure stamped on the label is the lashing capacity, or LC, given in decanewtons (daN). One hundred daN is roughly 100kg of restraint. A typical 50mm ratchet strap might carry an LC around 2,500daN to 5,000daN depending on the webbing and end fittings, but you check the actual label, you do not guess.

Two methods do the work, and they are not the same:

• Direct lashing ties the load directly to anchor points, often at an angle, and resists movement using the full lashing capacity of the strap. This is what you use for heavy, rigid loads such as steel, plant or concrete.
• Frictional or top-over lashing throws the strap over the top of the load and tensions it down, increasing the friction between load and bed. Here the useful figure is the tension the strap puts in, not its full LC, which is why over-the-top lashing on a slippery load achieves far less than people assume.

Anchor points and the headboard have to be rated too. There is no value in a 5,000daN strap clipped to a tie rail that pulls out at half that. Match the weakest link, inspect webbing for cuts, abrasion and chemical damage, and bin anything frayed. The table below sets out how restraint requirements stack up for common loads.

One myth worth killing: the curtains on a standard curtainsider are weather protection, not load restraint. Unless the vehicle is specifically built and certified as a load-rated curtainsider (XL rated to EN 12642), the curtains will not hold a shifting load, and DVSA will treat them as no restraint at all.

Vehicle weights: gross, train and axle

Securing the load is half the job. The other half is making sure the loaded vehicle stays within its plated weights. Every vehicle carries a manufacturer’s plate and, where required, a ministry (DfT) plate showing the legal maximums. There are three separate limits, and you can be legal on one while illegal on another.

• Gross vehicle weight (GVW) is the maximum permitted weight of the vehicle plus its load. For a standard six-axle artic carrying a container or running road-friendly suspension, the normal maximum is 44 tonnes. Drop to five axles and it is generally 40 to 41 tonnes; a two-axle rigid is typically plated at 18 tonnes.
• Train weight applies to combinations: the tractor unit plus the trailer and load together, or a drawbar outfit. The plated train weight is a separate limit from the individual unit weights.
• Individual axle weights are where most prohibitions actually come from. A single non-driving axle is generally limited to 10 tonnes and a single driving axle to 10.5 tonnes, rising to 11.5 tonnes with road-friendly suspension. Tandem and tri-axle bogies have their own banded limits depending on spacing. You can be under your gross weight and still be over on one axle.

The legal basis is the Road Vehicles (Construction and Use) Regulations and the Road Vehicles (Authorised Weight) Regulations 1998. The plate is what binds you, because it reflects what that specific vehicle is built and certified to carry.

How overloading actually happens

Operators assume overloading means a vehicle that is simply too heavy overall. More often the gross weight is fine and the problem is distribution. Load too much over the rear, or fail to slide a trailer’s axles or a fifth wheel correctly, and a single axle goes over its plated limit while the total is well within the gross. Part-load deliveries make it worse: a vehicle that left the yard legal can become overloaded on an axle once the front pallets come off and the weight shifts rearwards.

The defences are practical. Know the unladen weight and the payload margin for each vehicle. Plan the load so weight sits within the plated axle positions, not just under the gross. Use a weighbridge or on-board axle weighing for anything close to the limit, and brief drivers that unloading order changes the axle weights. Our guide to walkaround checks and defect reporting covers how load security and weight checks fit into the driver’s daily routine.

The consequences: prohibitions, fines and your repute

DVSA examiners weigh suspect vehicles at the roadside. They generally allow a small tolerance, around 5% on a given weight, before they act, but that tolerance disappears once an axle or the gross is over by roughly a tonne or more. From there the response escalates with the size of the overload.

Two things sting beyond the fine. First, each overloaded element is a separate offence. A vehicle over on the front axle, the drive axle and the gross weight is three offences, and both the driver and the operator can be charged. Second, an overloaded or unsafe vehicle gets a prohibition, often an immediate PG9, and it does not move until the load is reduced, redistributed or removed, which can mean immobilisation and a second vehicle to recover the work.

The longer tail is your record. Prohibitions and offences feed the Operator Compliance Risk Score, pushing you towards red and making your vehicles a magnet for roadside stops. Serious or repeated failures get reported to the traffic commissioner, where load security and overloading go directly to your repute and the future of your licence. I have seen operators lose vehicle authority over a pattern of overloads that each looked minor on the day. Keeping these basics right is part of the wider compliance picture set out in our operator licence compliance checklist.

Frequently asked questions

How much restraint does a load actually need?

The restraint system must be able to hold the full weight of the load against forward movement, because heavy braking throws the load towards the cab with a force roughly equal to its whole weight. To the sides and to the rear it must hold about half the load’s weight. Friction helps reduce the strain on the lashings but it is never enough on its own.

Can I rely on the curtains of a curtainsider to hold the load?

No. On a standard curtainsider the curtains are weather protection, not load restraint, and DVSA treats them as no restraint at all. Only a vehicle specifically built and certified as a load-rated curtainsider (for example XL rated to EN 12642) can use its structure as part of the securing system, and even then within its certified limits.

What is lashing capacity and where do I find it?

Lashing capacity (LC) is the rated strength of a strap or chain, shown on the label in decanewtons (daN), where 100daN is about 100kg of restraint. Webbing straps are made to EN 12195-2. Always read the actual label, match the anchor points and headboard to the same rating, and replace any lashing that is cut, frayed or chemically damaged.

Can I be overloaded on an axle but legal overall?

Yes, and it is common. You can sit comfortably under your gross vehicle weight while a single axle is over its plated limit because of how the load is distributed. Each overloaded axle is a separate offence, so plan the load to the axle positions, not just the gross, and weigh anything close to the limit.

What happens if DVSA finds my vehicle overloaded?

The vehicle is weighed and, beyond a small tolerance, you get a graduated fixed penalty rising with the size of the overload, an immediate prohibition that stops the vehicle until the excess is dealt with, and for serious cases a court summons with fines of up to £5,000 per overloaded point. The offence also affects your OCRS and can be reported to the traffic commissioner.

How ETM helps with load securing and weight compliance

Most load security and overloading failures trace back to a system that was never properly set up: no method statement for awkward loads, no weighing routine, drivers never shown how axle weights move as they unload. External Transport Manager connects operators and fleets with verified, experienced external transport managers and compliance specialists who can build that system, check your loading and weight controls against the DVSA standard, and brief your drivers before a roadside check finds the gap. If you want a professional to review how you secure and weigh your loads, start a support request to be matched with a verified transport manager, or find a transport manager directly.