The advantages of zero turn mowers over lawn tractors are speed and manoeuvrability. The out-front nature of the mowing deck allows the mower to efficiently mow areas in a way a lawn tractor cannot, mainly getting into tight spaces and getting closer to obstacles. Zero turn mowers are also notoriously fast, capable of mowing acres of grass in mere minutes.  Ideal for olive groves or orchards where weed growth is almost continual and the blade height can be set to avoid irrigation tubes.