Transporting an Excavator in Europe: Weight, Height and Permits
2 lipca 20268 min czytania
Three numbers decide whether your excavator moves legally: machine weight, transport height and trailer deck height. Here is how the EU limits work, when you cross into abnormal load territory, and how to specify around it.
Moving an excavator legally in Europe comes down to three numbers: the machine's transport weight, its transport height, and the deck height of the trailer carrying it. Add deck height to machine height and you have your travelling height. If the total stays at or below 4 metres and the combination stays within national axle load limits, you travel as a normal load. Above either threshold you are in abnormal load territory and need a permit for every country on the route.
The short answer
A 20 to 30-tonne excavator on a 3-axle lowbed with an 800 mm deck normally travels as a standard load across most of Europe. A 40-tonne machine usually still fits but leaves little margin on axle loads. Above roughly 45 tonnes, or where the machine cannot be lowered under 3.2 metres, permits become the norm rather than the exception.
Start with the machine, not the trailer
Every specification conversation should open with four figures from the machine's own data sheet: transport weight, transport height, transport width and track width or wheelbase. Transport weight is not operating weight — removing the bucket, counterweight or boom section changes it, sometimes by several tonnes. Transport height is measured with the boom lowered to its travel position, and manufacturers publish this figure precisely because it decides road legality.
Get these four numbers before anyone quotes you a trailer. A request for a trailer without them usually produces a unit that is either overbuilt for the work or short of capacity on the heaviest job. If you are still deciding between a lowbed and a low loader, the two terms describe the same trailer family in most European markets — the specifications below matter far more than the name.
The EU baseline: Directive 96/53/EC
Weight
The directive sets 40 tonnes as the maximum gross combination weight for a standard articulated vehicle, rising to 44 tonnes for intermodal container transport. Subtract the tractor unit and the trailer's own tare weight and what remains is your legal payload. This is where high-strength steel earns its cost: a lighter chassis converts directly into more machine on the deck within the same legal ceiling.
Axle loads matter as much as gross weight. The baseline is 10 tonnes on a single non-driving axle and 11.5 tonnes on a driving axle, with tandem and tridem groups governed by their own tables and by axle spacing. A combination can be under 40 tonnes gross and still be illegal because one axle group is overloaded.
Height
Four metres is the standard maximum travelling height in most member states. This is the figure that makes lowbeds exist: a machine standing 3.2 metres tall cannot travel on a standard flatbed with a 1.4-metre deck, but sits comfortably on a lowbed deck at 800 millimetres.
National practice varies more than the directive suggests. Some states apply a lower working limit, others have no statutory height limit at all and rely on bridge and tunnel signage instead. Confirm the figure for every country on the route rather than assuming four metres everywhere.
Width and length
Standard maximum width is 2.55 metres, and 2.60 metres for temperature-controlled bodies. Maximum length for an articulated combination is 16.50 metres. Tracked machines are frequently wider than 2.55 metres, which means a machine that is legal on weight and height can still require a permit on width alone.
What changes when you exceed a limit
Once any dimension or weight goes beyond the baseline, the transport becomes an abnormal load and needs authorisation from each national authority on the route. Permit systems differ substantially between countries: some issue single-journey authorisations, others offer annual or route-based permits, and requirements for escort vehicles, movement windows and notification periods vary widely.
Practical consequences are what matter for planning. Permits take time, sometimes weeks for the heaviest categories. Routes get dictated to you rather than chosen. Night or weekend movement restrictions apply in many jurisdictions. Escort vehicles add cost per journey. For an operator running the same machines repeatedly, the arithmetic often favours specifying a trailer that keeps the load legal over paying permit and escort costs on every trip.
How deck height decides your legal height
Deck height is not a single fixed number. It moves with tyre size, suspension type and deck construction. On STU lowbeds the working range typically sits between 750 and 900 millimetres, and every 50 millimetres you save is 50 millimetres of machine height you can carry.
Work backwards from the limit. Take 4 metres, subtract your tallest machine's transport height, and the remainder is the maximum deck height you can accept. If a machine stands 3.3 metres, you need a deck at or below 700 millimetres, which pushes the specification towards smaller tyres, a lower suspension setting or a deeper drop in the main beam. If the machine stands 3.0 metres, an 900 millimetre deck is comfortable and you can specify for durability instead.
Matching axle count to machine weight
Axles carry payload and distribute it across the road surface. As a working guide for excavator transport: two axles suit machines up to roughly 30 tonnes, three axles cover the 30 to 45-tonne band that includes most tracked excavators and wheel loaders, four axles handle 45 to 70 tonnes, and five to eight axles are specified above that for the largest machines, cranes and transformers.
These are structural guidelines, not legal ones. The binding constraint is usually the axle load limit on your specific route, not the trailer's capacity. A three-axle trailer that carries 45 tonnes structurally may still need a fourth axle to stay within national limits on a particular corridor, or a self-steering configuration to satisfy turning requirements.
Loading and securing
Loading an excavator is where most damage and most incidents happen. Hydraulic ramps handle it on prepared ground. On unprepared ground, a detachable or hydraulic gooseneck lets the machine drive on from the front at a much shallower approach angle, which matters for low-clearance tracked equipment where the belly or counterweight can ground out on a steep ramp.
Securing is governed by EN 12195, which sets out how to calculate the restraint needed in each direction based on the load's mass and the friction between machine tracks and deck. In practice this means enough lashing points of adequate rated capacity, positioned so that chains pull at the intended angles. STU lowbeds are supplied with eight 16-tonne lashing rings per side as standard, which gives the flexibility to secure machines of very different geometries without improvising.
Tracks and blades should be chocked, the boom lowered and rested, hydraulics locked, and the machine's own travel lock engaged where fitted. The load securing calculation assumes all of this is done.
What catches operators out
Three things, repeatedly. First, using operating weight instead of transport weight and discovering the difference at a weighbridge. Second, assuming that legal in the country of departure means legal throughout the route, when height limits, axle rules and permit thresholds all vary. Third, specifying a trailer around the machine currently owned rather than the machine likely to be bought next, then paying for permits for the rest of the trailer's life.
Planning a compliant transport
Collect the four machine figures from the data sheet. Add trailer deck height to machine transport height and check the total against the lowest limit on the route. Check gross combination weight and each axle group against national limits for every country crossed. Where any figure exceeds a limit, start the permit process early and build the lead time into the schedule. Where figures sit close to a limit, treat the margin as the specification target rather than an acceptable risk.
Frequently asked questions
What is the maximum height for road transport in Europe?
Four metres is the standard maximum in most EU member states under Directive 96/53/EC. Some countries apply lower working limits and others rely on signed bridge and tunnel clearances rather than a statutory figure, so the limit should be confirmed for each country on the route.
Do I need a permit to transport a 30-tonne excavator?
Usually not, provided the combination stays within 40 tonnes gross, under 4 metres travelling height, within 2.55 metres width and within national axle load limits. A 30-tonne machine on a 3-axle lowbed typically satisfies all four.
How tall a machine can I carry on a lowbed?
Subtract the deck height from the applicable height limit. With a 4-metre limit and an 800 millimetre deck, machines up to roughly 3.2 metres travel legally. Lower deck specifications extend this.
Does removing the bucket help?
Often significantly. Removing the bucket, and on larger machines the counterweight, reduces both transport weight and sometimes transport height, and can be the difference between a standard movement and a permit application. The machine manufacturer's data sheet gives the figures for each configuration.
Is it cheaper to buy a bigger trailer or pay for permits?
It depends on frequency. For occasional oversize movements, permits are cheaper. For an operator moving the same machines weekly, the cumulative cost of permits, escorts and route restrictions usually exceeds the price difference between a 3-axle and a 4-axle unit within the first two or three years.
Regulations and national derogations change. The figures above describe the EU framework under Directive 96/53/EC and were last reviewed in July 2026. Verify current national rules for each country on a given route before planning any movement.