Abstract: A tractor-trailer (10) comprises a tractor (12) and a trailer (14), a trailer coupling (12b) and a supply coupling (16/18) between the two component vehicles (12, 14) with a tractor-side coupling half (16) and a trailer-side coupling half (18), which can be coupled together by bringing them together along a predefined coupling axis (K). One of the coupling halves (16) is connected to the supply unit of the associated first component vehicle (12) through a flexible supply line (16d). To establish the coupled state between the two coupling halves (16, 18), an actuator (20) is arranged on the first component vehicle (12) that moves the first coupling half (16) toward the second coupling half (18) and joins the one to the other along the predefined coupling axis (K). The first coupling half (16) is arranged on the actuator (20) such that it can be oriented in all spatial directions at least within predetermined limits.

Abstract: In the method, useful signals from an originating station are enveloped by counter-counter measure additional signals, independent of the useful signals, transmitted from the originating station independent of the locating and transmission system, and effective to force a jammer, having a limited available jamming power, to diminish or shift the density of its spectral jamming output. The useful signals are enveloped in a time range, a frequency range, and/or a spatial range, and the useful signals and the additional signals may have frequencies which differ from each other. In one embodiment of the apparatus, the useful signals and the additional signals are supplied to respective inputs of a multiplexer whose output is connected to a transmitter connected to a radiator which may be either an optical radiator or an electromagnetic radiator.