Calculate performance values

Here you can calculate the required performance values in accordance with UNECE regulation R55, in order to choose the correct coupling equipment.

Truck + trailer with hinged drawbar
Truck + trailer with hinged drawbar
Calculate
Truck + centre axle trailer with rigid drawbar
Truck + centre axle trailer with rigid drawbar
Calculate
Tractor unit + semitrailer
Tractor unit + semitrailer
Calculate
Truck + dolly + semitrailer
Truck + dolly + semitrailer
Calculate
Tractor unit + semitrailer + centre axle trailer
Tractor unit + semitrailer + centre axle trailer
Calculate
Tractor unit + semitrailer + dolly + semitrailer
Tractor unit + semitrailer + dolly + semitrailer
Calculate
Truck + centre axle trailer with rigid drawbar + centre axle trailer with rigid drawbar
Truck + centre axle trailer with rigid drawbar + centre axle trailer with rigid drawbar
Calculate
Tractor unit + link trailer + semitrailer (B-train)
Tractor unit + link trailer + semitrailer (B-train)
Calculate

Evaluate coupling equipment

Here you can evaluate different alternatives when choosing coupling equipment or assessing your existing equipment.

Truck + trailer with hinged drawbar
Truck + trailer with hinged drawbar
Calculate
Truck + centre axle trailer with rigid drawbar
Truck + centre axle trailer with rigid drawbar
Calculate
Truck + dolly + semitrailer
Truck + dolly + semitrailer
Calculate
Tractor unit + semitrailer + centre axle trailer
Tractor unit + semitrailer + centre axle trailer
Calculate
Tractor unit + semitrailer + dolly + semitrailer
Tractor unit + semitrailer + dolly + semitrailer
Calculate
Truck + centre axle trailer with rigid drawbar + centre axle trailer with rigid drawbar
Truck + centre axle trailer with rigid drawbar + centre axle trailer with rigid drawbar
Calculate

Calculate performance values

Evaluate coupling equipment

Truck + trailer with hinged drawbar

The D value is a reference value for the horizontal force between truck and trailer.

The coupling equipment you choose must have at least as high a D value as the calculated vehicle combination.

In order to evaluate your combination, you need to enter both the vehicle values and the certified performance values for each component of the coupling equipment.

You can find the certified performance values for the components of the coupling equipment either on the type plate affixed to the component or in the documentation for the component. 

Enter vehicle values
tonne
tonne
Enter certified performance values
Drawbeam Truck
kN
Coupling Truck
kN
Drawbar Trailer
kN

Calculate performance values

Evaluate coupling equipment

Truck + centre axle trailer with rigid drawbar

The Dc value is a reference value for the horizontal force between truck and trailer with a rigid drawbar. Here you also need to take into account the vertical forces. The V value is a reference value for the vertical force. This value differs between vehicles with air suspension and those with other types of suspension.

The coupling equipment you choose must have at least as high Dc and V values as the calculated vehicle combination. 

In order to evaluate your combination, you need to enter both the vehicle values and the certified performance values for each component of the coupling equipment.

You can find the certified performance values for the components of the coupling equipment either on the type plate affixed to the component or in the documentation for the component. 

Enter vehicle values
tonne
tonnes
metres
metres
m/s2
Enter certified performance values
Drawbeam Truck
kN
kN
kN
Coupling Truck
kN
kN
kN
Drawbar eye centre axle trailer
kN
kN
kN

Calculate performance values

Evaluate coupling equipment

Tractor unit + semitrailer

The D value is a reference value for the horizontal force between tractor unit and semitrailer.

For this combination, you must consider the maximum kingpin pressure, which may be limited by the total mass of the tractor unit, the max. kingpin pressure on the semitrailer and the max. kingpin pressure on the fixed or adjustable fifth wheel.

The coupling equipment you choose must have at least as high D  values as the calculated vehicle combination. 

Enter vehicle values
tonne
tonne
tonne
Enter certified performance values

Calculate performance values

Evaluate coupling equipment

Truck + dolly + semitrailer

The D value is a reference value for the horizontal force between truck and trailer.

D is the reference value for the fifth wheel coupling point.

The Dc value is a reference value for the horizontal force between truck and dolly with a rigid drawbar. Here you also need to take into account the vertical forces. The V value is a reference value for the vertical force. 

For a dolly with rigid drawbar, the Dc and V values for the chosen coupling equipment must exceed the calculated values. For a dolly with hinged drawbar, the D value for the coupling equipment must exceed the calculated Dc value for the dolly. 

In order to evaluate your combination, you need to enter both the vehicle values and the certified performance values for each component of the coupling equipment.

You can find the certified performance values for the components of the coupling equipment either on the type plate affixed to the component or in the documentation for the component. 

Enter vehicle values
tonne
tonne
tonne
tonne
tonne
metres
Enter certified performance values
Drawbeam Truck
kN
kN
kN
Coupling Truck
kN
kN
kN
Drawbar eye dolly
kN
kN
kN

Calculate performance values

Evaluate coupling equipment

Tractor unit + semitrailer + centre axle trailer

The Dc value is a reference value for the horizontal force between truck and trailer with a rigid drawbar. Here you also need to take into account the vertical forces. The V value is a reference value for the vertical force. This value differs between vehicles with air suspension and those with other types of suspension.

The coupling equipment you choose must have at least as high Dc and V values as the calculated vehicle combination.

In order to evaluate your combination, you need to enter both the vehicle values and the certified performance values for each component of the coupling equipment.

You can find the certified performance values for the components of the coupling equipment either on the type plate affixed to the component or in the documentation for the component. 

Enter vehicle values
tonne
tonnes
tonne
tonne
metres
metres
m/s2
Enter certified performance values
Drawbeam semitrailer
kN
kN
kN
Coupling semitrailer
kN
kN
kN
Drawbar eye centre axle trailer
kN
kN
kN

Calculate performance values

Evaluate coupling equipment

Tractor unit + semitrailer + dolly + semitrailer

The Dc value is a reference value for the horizontal force between truck and trailer with a rigid drawbar. Here you also need to take into account the vertical forces. The V value is a reference value for the vertical force. This value differs between vehicles with air suspension and those with other types of suspension.

The coupling equipment you choose must have at least as high Dc and V values as the calculated vehicle combination.

For a dolly with rigid drawbar, the Dc and V values for the chosen coupling equipment must exceed the calculated values. For a dolly with hinged drawbar, the D value for the coupling equipment must exceed the calculated Dc value for the dolly. 

In order to evaluate your combination, you need to enter both the vehicle values and the certified performance values for each component of the coupling equipment.

You can find the certified performance values for the components of the coupling equipment either on the type plate affixed to the component or in the documentation for the component. 

Enter vehicle values
tonne
tonne
tonne
tonne
tonne
tonne
tonne
metres
Enter certified performance values
Drawbeam semitrailer
kN
kN
kN
Coupling semitrailer
kN
kN
kN
Drawbar eye dolly
kN
kN
kN

Calculate performance values

Evaluate coupling equipment

Truck + centre axle trailer with rigid drawbar + centre axle trailer with rigid drawbar

The Dc value is a reference value for the horizontal force between truck and trailer with a rigid drawbar. Here you also need to take into account the vertical forces. The V value is a reference value for the vertical force. This value differs between vehicles with air suspension and those with other types of suspension.

The coupling equipment you choose must have at least as high Dc and V values as the calculated vehicle combination.

In order to evaluate your combination, you need to enter both the vehicle values and the certified performance values for each component of the coupling equipment.

You can find the certified performance values for the components of the coupling equipment either on the type plate affixed to the component or in the documentation for the component. 

Enter vehicle values
tonne
tonnes
tonnes
metres
metres
metres
metres
metres
m/s2
m/s2
Enter certified performance values
A - Drawbeam Truck
kN
kN
kN
A - Coupling Truck
kN
kN
kN
A - Drawbar eye centre axle trailer 1
kN
kN
kN
B - Drawbeam centre axle trailer 1
kN
kN
kN
B - Coupling centre axle trailer 1
kN
kN
kN
B - Drawbar eye centre axle trailer 2
kN
kN
kN

Calculate performance values

Evaluate coupling equipment

Tractor unit + link trailer + semitrailer (B-train)

The D value is a reference value for the horizontal force between tractor unit and semitrailers.

For this combination, you must consider the maximum kingpin pressure, which may be limited by the total mass of the tractor unit, the max. kingpin pressure on the semitrailer and the max. kingpin pressure on the fixed or adjustable fifth wheel.

The coupling equipment you choose must have at least as high D and U values as the calculated vehicle combination.

Enter vehicle values
tonne
tonne
tonne
tonne
tonne
Enter certified performance values

TRADE-OFF DC vs. V

What is a trade-off?

 

 

A component which is only subjected to a horizontal force has a certified performance value for this (Dcert). If the same component is also subjected to vertical forces (rigid drawbar), its performance in the horizontal axis will be reduced. The component will have certified performance values for this situation too (Vcert and Dc-cert).

The performance difference between Dcert and Dc-cert is the ‘trade-off’. This means that a lower V value than the certified value may be permitted, so the component can be used without any risk provided that the calculated V value does not exceed Vlimit.

To drive with this combination, you need a certificate to show that a trade-off is possible and that the coupling equipment provides adequate performance.

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Equipment VIN 1
Equipment VIN 2
Certificate sent to:

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Equipment VIN 1
Equipment VIN 2
Certificate sent to:

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Certificate sent to:

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Equipment VIN 1
Equipment VIN 2
Certificate sent to:

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Equipment VIN 2
Certificate sent to:

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Equipment VIN 2
Certificate sent to:

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Equipment VIN 1
Equipment VIN 2
Equipment VIN 3
Certificate sent to:

Order a certificate

With a certificate, RINGFEDER/VBG Group attests that the performance of your existing coupling equipment is sufficient for the stated combination.

Enter VIN no:
Enter RINGFEDER part-no:
Certificate sent to:

You have ordered a certificate

The details will be reviewed manually, so you must allow for a certain delivery time before you receive the certificate.