Mecalac has introduced a rail-road version of its compact 8MCR crawler excavator. The machine has two sets of hydraulically-lowered rail wheels that use the dozer blade circuit to lift it clear of the tracks. The wheels can be set at 1,000mm, 1,435mm and 1,668mm widths, to suit various European rail networks. Activation of the on-rail function automatically turns on all regulatory lighting, limits the working height of the equipment, limits upper structure rotation and activates a load monitoring system.