What is required when a driver must be present during the loading and unloading of certain hazmat cargo tanks?

a.The driver can leave once the pump starts
b.The driver may sleep in the cab
c.The driver or qualified person must attend and control the process the entire time
d.No attendance is ever required

Giải thích

For flammable and certain other hazardous cargo tank transfers, a qualified person must attend the operation from start to finish. Attending means being alert, within 25 feet, with a clear view, and able to stop the flow quickly. Constant attendance prevents overfills and spills.

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