The section 100, for use in a rail or tram network, has two sets of steerable wheels 26, 28, 50, 52, each set having two wheels on respective stub shafts or similar supports which are rotatable about vertical axes. The direction of each wheel 26, 28 is determined by the angle between the tram section and a leading or following tram section by means of a mechanical linkage comprising a control lever 106 operating a connecting lever 108 which acts on a push rod 112 and track rods 42. Alternatively, electrical or hydraulic control means are used. A further option is control by a track sensor.