Berlin, 21 May 2026
Brief introduction
In international road transport, simple weight specifications are often no longer enough to plan the transport correctly. Today, what is decisive above all is volume, loading metres, weight distribution, and the actual utilisation of the vehicle. Errors in calculation often lead to incorrect vehicle disposition, overloading, or problems with cargo securing. It becomes particularly critical when the total weight remains permissible but individual axles of the truck are overloaded. Such problems arise in daily transport operations significantly more often than many companies suspect.
Why m³ and loading metres are so important in transport
In international road freight transport, weight alone does not determine correct vehicle planning. Many shipments are light yet at the same time require a great deal of space. Other goods, by contrast, have a high weight with a comparatively low volume.
For groupage, part loads, or industrial goods in particular, it must therefore be precisely calculated how much loading area and volume are actually required. Faulty information often leads to the wrong vehicle being assigned or the goods not being fully loaded. Reloading or additional costs also often arise from imprecise dimensions and faulty weight specifications.
Imprecise shipment data are therefore one of the most frequent causes of problems in transport planning.
What m³ means in road freight transport
Calculation in cubic metres serves to determine the actual loading volume of a shipment. Particularly for bulky or light goods, volume often plays a bigger role than weight alone.
The calculation follows the following basic principle:
All dimensions are given in metres.
For example, a pallet measuring 1.20 m in length, 0.80 m in width, and 1.50 m in height results in:
In international overland transport in particular, this calculation is used daily to better estimate actual vehicle utilisation.
Why volume alone is not enough
Many shippers focus exclusively on m³ specifications. In practice, however, this is rarely enough.
In addition, weight, stackability, weight distribution, and vehicle type play an important role. Light but bulky goods often block more loading area than heavy compact cargo. That is precisely why freight forwarders additionally work with loading metres.
In international road transport, volume and loading area are therefore usually assessed together.
What a loading metre means
The loading metre indicates the actually occupied loading area in the trailer. One loading metre normally corresponds to one metre of loading area over the entire usable interior width of the vehicle.
For standard trailers, this interior width is usually 2.40 metres.
The calculation is often carried out using the following formula:
A shipment of 2.40 m in length and 1.20 m in width therefore occupies:
For long machinery or non-stackable goods in particular, the loading metre is often significantly more important than volume alone.
Difference between m³ and loading metre
Many companies confuse the two values, although they describe different factors.
Cubic metres indicate the total volume of a shipment. The loading metre, on the other hand, shows the actually occupied loading area in the vehicle.
A high pallet can, for example, take up relatively few loading metres while at the same time having a large volume. Conversely, a long machine blocks several loading metres although the volume remains comparatively small.
That is why both values are normally considered together in international road transport.
Why vehicle utilisation does not only depend on weight
A standard articulated trailer normally has an internal length of about 13.60 metres and room for around 34 Euro pallets. Nevertheless, free loading area does not automatically mean that additional cargo can be loaded.
In practice, axle loads, weight distribution, cargo securing, or the stackability of the goods often limit the actual utilisation of the vehicle.
Heavy machinery or compact industrial goods regularly cause problems with weight distribution. The permissible gross weight alone is therefore not enough for safe transport planning.
Why axle overload is a major problem
Many companies focus exclusively on the permissible total weight of the truck. The individual axle loads, however, are additionally decisive.
A vehicle can formally be under the total weight and yet have an axle overload. This happens in international overland transport more often than many assume.
It becomes particularly problematic with heavy machinery, concentrated weight, or incorrectly positioned cargo. Metal goods or compact industrial goods also regularly lead to weight-distribution problems.
In such cases, considerable risks arise for road safety, braking behaviour, or vehicle stability. In addition, fines, reloading, or delays during checks may follow.
How axle overloads arise in practice
A typical error arises when heavy cargo is loaded directly in the front area of the trailer. As a result, the drive axle or the kingpin is overloaded although the total weight is permissible.
Similar problems often arise from uneven weight distribution, incorrect loading sequence, or missing loading planning. For groupage transports in particular, weight distribution must therefore be planned especially carefully.
Why precise shipment data are decisive
Many problems arise even before the actual loading. Weights are often estimated or dimensions given imprecisely.
Particularly problematic are incorrect height specifications, imprecise weights, or missing notes on stackability. Small deviations are often enough for the goods not to fit or for axle loads to be exceeded.
The more precise the shipment data, the more stably the entire transport workflow functions later on.
Typical errors in calculating m³ and loading metres
The same problems arise again and again in daily transport operations. Packaging is particularly often not taken into account or dimensions are given incorrectly.
Stackability is also often misjudged. A theoretically stackable shipment often cannot in fact be stacked due to sensitive packaging or cargo-securing requirements.
Another common error arises when only the total weight is considered while the axle-load distribution is completely ignored.
FAQ on m³, loading metres, and axle load
One loading metre (LDM) corresponds to a loading-area length of 1 metre over the entire internal width of the trailer. The calculation is made according to the formula:
length of goods (m) × width of goods (m) ÷ 2.40 m
Example: A shipment of 2.40 m × 1.20 m needs:
2.40 × 1.20 ÷ 2.40 = 1.20 loading metres
Stating loading metres is particularly important for bulky goods that require a lot of floor space but are comparatively light.
Conclusion
The correct calculation of m³, loading metres, and axle loads is one of the most important foundations of international road freight transport. Many problems arise even before loading due to imprecise dimensions, incorrect weight specifications, or missing loading planning. Anyone who cleanly calculates volume, loading area, and weight distribution significantly reduces risks and ensures more stable and safer transport workflows.
