General rules for vehicles, mechanized equipment and marine gear used in construction. Equipment left unattended at night next to a highway in use or next to active construction areas must be marked by suitable lights or reflectors, or by barricades fitted with them, so its location is visible. Tires on split rims, or on rims with locking rings or similar devices, may only be inflated, mounted or dismounted using a safety tire rack, a cage or equivalent protection. Before anyone works under or between heavy machinery or parts held up by slings, hoists or jacks, the load must be substantially blocked or cribbed against falling or shifting. Blades of bulldozers and scrapers, buckets of end-loaders, dump bodies and comparable parts must be fully lowered or blocked during repair and when idle, with controls in neutral, motors off and brakes set unless the work needs otherwise. Parked equipment must have the parking brake set, and on an incline the wheels must also be chocked. Batteries are used, cared for and charged under Subpart K. Cab glass must be safety glass or an equivalent that causes no visible distortion affecting safe operation. Near power lines or energized transmitters (unless the lines are deenergized and visibly grounded at the work point, or independent insulating barriers are erected), clearance between the lines and the crane, or any load it carries, must be at least 10 feet for lines of 50 kV or less; above 50 kV it is 10 feet plus 0.4 inch per kV over 50, or twice the insulator length, never under 10 feet. When travelling unloaded with the boom lowered the minimum clearance is 4 feet below 50 kV, 10 feet for more than 50 kV through 345 kV, and 16 feet through 750 kV. A designated person must watch clearance and warn the operator where visual judgement is difficult. Boom guards, insulating links or proximity devices may be used but do not relax other rules. Every overhead wire is treated as energized until its owner or the utility says otherwise and it has been visibly grounded. Before work near transmitter towers the transmitter must be deenergized or tests made for induced charge on the crane; where needed, the equipment is grounded directly to the upper rotating structure, ground jumper cables are attached to handled materials using nonconductive poles with large alligator clips or similar, and combustible and flammable materials are cleared from the immediate area. Spur railroad tracks need derails and/or bumper blocks where a rolling car could strike cars being worked or roll into a building or a work or traffic area.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.