Technically permissible maximum total mass (t) of the towing vehicle transmitted to the ground by the axles. (Perm. Total weight of the truck in t)

Mass (t) transmitted to the ground by the axles of the **CAT**_{1}. (Sum of the axle loads of the CAT_{1} in t)

Mass (t) transmitted to the ground by the axles of the **CAT**_{2}. (Sum of the axle loads of the CAT_{2} in t)

Length (m) of the loading area of the **CAT**_{1}.

Theoretical drawbar length (m) of **CAT**_{1}, i.e. the distance between the center of the drawbar eye and the center of the axle assembly.

Distance (m) from the center of axles of **CAT**_{1} to its rear coupling point.

Length (m) of the loading area of the **CAT**_{2}.

Theoretical drawbar length (m) of **CAT**_{2}, i.e. the distance between the center of the drawbar eye and the center of the axle assembly.

Equivalent vertical acceleration in the coupling point, dependent on the kind of suspension on the rear axles of the towing vehicle including a constant factor. Air suspension and or equivalent **a=1.8m/s2** and other suspension **a=2,4m/s2**.

Equivalent vertical acceleration in the coupling point, dependent on the kind of suspension on the rear axles of the towing vehicle including a constant factor. Air suspension and or equivalent **a=1.8m/s2** and other suspension **a=2,4m/s2**.