This article deals with braking tests of semi-trailer truck in forward and rear driving direction. It compares the accelerations and angular velocities in the front and rear part of the semi-trailer and their influence on forces in lashing points when using front lashing. The paper also contains a comparison between forces reached in the lashing points at the rate of cargo weight between the braking tests of semi-trailer and similar braking tests of a van. The first part of the paper contains also possibilities of using tracking devices for detecting accelerations acting on cargo in semi-trailer during transport.

This article is focused on the results of the testing of the complete web lashing and the cyclic loading tests of selected lashing straps of three various producers according to the standard EN 12 195-2. It analyses how the quantity of winding in tensioning ratchet affects the results of these tests, whereas it compares the results of the straps wound 2¼ times around the rotating axis (as is correct according to the standard) and those wound 1¼ times around the rotating axis (as is not enough quantity of a winding). The article concludes that the influence of the winding on elongation of straps as well as on operating life of the straps is strong. Damages on particular parts of complete lashing straps, which were found out within these tests, are also presented in the article.