PDFWAC 296-864-30005
Use a restraining device.
(1) You must use a restraining device for inflating tires on split rim wheels.
(2) You must use a restraining device or barrier for inflating tires on single-piece wheels.
EXEMPTION: | A restraining device or barrier is not required for single-piece rim wheels, if the rim wheel will be bolted onto a vehicle during inflation. |