Or. Admin. R. 437-007-1140
When logs are to be unloaded at different destinations within the log handling or storage areas, vehicles must not be moved after each partial unloading until the requirements for securing loads are met unless:
ORS 654.025(2) & 656.726(4)
ORS 654.001 - 654.295
OSHA 5-2003, f. 6-2-03, cert. ef. 12-1-03