PDFWAC 296-54-587
Self-loading log trucks.
(1) A safe means of access and egress must be provided to the operator's loading work station.
(2) Self-loading log truck operators must not unload their own load unless a positive means of securing the logs is provided when binders and wrappers are removed.
(3) New self-loading log trucks purchased and put in operation after January 1, 1980, must be equipped with:
(a) A check valve installed on the jib boom; and
(b) A seat that is offset from the point of attachment of the boom. The seat and boom structure must rotate concurrently.
(4) The operator of a self-loading log truck must not heel the log over the operator's work station.