Luban works on the highway. Highway maintenance class is an operation group established within a certain section of highway to carry out daily maintenance and repair of highway. The contents of the road shift work are: in charge of the road section, regular patrol inspection. Repair the slight damage of each part of the expressway in time. Keep the pavement and shoulder flat and clean. Keep the slope stable. Keep the drainage of subgrade, bridge and culvert unblocked. Keep signs and other structures and ancillary facilities clean and in good condition.