Virginia uses white on black for a lot of its regulatory signs, especially the "Radar Detectors Prohibited" signage at state lines.
Virginia also used to have white-on-black guide signs over the I-395 reversible carriageway, presumably to distinguish them from the signs over the general-purpose lanes, but I cannot find any pictures of those. The only picture I have that's related to those is this old one of a regulatory sign on northbound I-395 approaching the express lanes' entrance at Turkeycock, but unfortunately because it's a black-and-white picture you have to take my word for it that the sign was black. I like the neat little divider below the word "Buses," and I find the use of "Pool Cars" to be interesting terminology because I assume some bureaucrat decided on that term before "carpools" because the norm. (Sort of reminds me of when the Supreme Court released an opinion in the early 1980s discussing what the Court called "VTRs"—"Video Tape Recorders," which of course became more popularly known as VCRs.)
