Overhead Crane Safety Systems: Buzzers, Horns, and Sirens
Per OSHA 1910.179, cranes equipped with radio controls or cab controls are required to have buzzers, horns, or sirens to provide an audible warning to other personnel while the crane or loads are in motion. These can also be added in addition to using a warning light for personnel on the ground who may not be able to see the crane’s warning lights.
In addition to the OSHA requirements, you should familiarize yourself with your state and local codes for audible warning device requirements. Some states like Michigan and California require the use of audible warning devices for any crane in motion—regardless of what control method the crane is using.
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