A motor grader (from autograder and grader) is a self-propelled earthmoving transport vehicle. It is designed for construction and municipal cleaning works during construction and repair of roads, airfields, irrigation canals, etc. Main operations: earth moving and development, mixing materials at the initial stages of building site preparation, repairing, profiling and smoothing the surface of unpaved and crushed stone-and-gravel roads, profiling the slopes of embankments and excavations, making and cleaning of drainage ditches, breaking of resistant (including frozen) soils and hard surfaces, cleaning the roadway from snow, ice and snow build-up, clearing roads from debris. The main working equipment of the A is a blade, which is located between the front and middle axis of the machine. Unlike the bulldozer blade, it is fully rotatable, i.e. it can be moved sideways, turned (in plane), and tilted. A dozer blade can also be fitted with a bulldozer blade, pick dozer (for preliminary loosening the soil and opening the road surface in the course of its repair), which is placed either in front of the front wheels, or immediately behind or behind the dozer blade, and a ripper installed behind the machine. As exchangeable working equipment are used bucket or forklift loaders, front and side plows for snow removal, sweeping brushes, and various bulldozers and raking dumps. Depending on the power there are four types of motor graders: light (55-65 kW), medium (65-110 kW), heavy (110-185 kW) and extra heavy (over 185 kW).