What are the precautions for single beam cranes

(1) Each crane hangs a sign with its rated capacity in an obvious place.

(2) During work, no one is allowed on the bridge or transporting people with hooks.

(3) No crane is allowed to drive without an operating license and drink.

(4) Concentration, no talking, smoking or doing irrelevant things during operation.

  (5) The car must be clean; no equipment and tools are allowed