Regular site for "white van" with very inconspicuous posting of "notice/warning" sign near intersection of Black Oak and Country Club. Van usually sits approximately 1/2 way down street (between Sutter and Lindero Sts.), monitoring traffic both ways but chiefly looking at eastbound traffic proceeding from Black Oak to Murphy. This is a flat, open, straight stretch of road with limited traffic and access, inviting one to go fast but is posted at only 25 MPH and that limit is rigorously enforced as a "cash cow" precisely because the speed limit is so inconsistent with the area.