<p>A traction head part includes a cabin which has a floor region, a roof and two side walls which extend between the floor region and the roof. The side walls each have an A-pillar on the head end thereof which is held on the floor region. One longitudinal member extends into the side walls from each A-pillar. The unit formed of the A-pillar and the longitudinal members is constructed to absorb and direct forces into the cabin in the case of a crash.</p>
