TOW BAR HAVIG A PARTIALLY OPEN TOW BAR CROSS-SECTION

The invention relates to a tow bar (1026) for a trailer vehicle, having a coupling long end and a vehicle long end axially opposite the coupling long end along a tow bar longitudinal axis (DL) defining a tow bar longitudinal direction, which tow bar has at the coupling long end thereof a coupling member (1020), in particular a towing eye (1020), which is designed to produce a coupling connection to a coupling component on the tractor vehicle side, wherein the tow bar (1026) is designed on the vehicle long end thereof for connection to a vehicle body of a trailer vehicle and wherein a tow bar body (1027) extends between the long ends of the tow bar (1026). According to the invention, the tow bar body (1027) has, in a tow bar portion (1142) nearer to the coupling long end, an orthogonal cross-section which is open with respect to the tow bar longitudinal direction (DL), and, in a tow bar portion (1140) nearer to the vehicle long end, an orthogonal cross-section which is closed with respect to the two bar longitudinal direction (DL).