There were several different signs made up. Some showing just the DP information, others with both the WDFW and DP info. But basically, the DP is good for all state land (State Parks, DNR and WDFW), the WDFW vehicle access permit is good only on WDFW lands, and one comes with your hunting or fishing license. On USFS land you need the NW Forest Pass (USFS permit) to park at trail heads designated as requiring the parking permit. Not all USFS trail heads require it as they are required to have specific things at the trail head such as toilet, etc. Why that information cannot be communicated clearly by office personnel is beyond me, it's not that difficult.