The D-pass goes into effect 1-July-2011
It will be required on motor vehicles when a street plate is required.
This applies to State Parks, WDFW and DNR managed public land.
If you have an ORV permit, you are exempt only when you are somewhere that a street plate is not required.
If you are on a county road that passes through DNR managed public land, no D-pass is required becuase you are on an easement granted to the county be the DNR.