I've got a development proposal that's discussing an "inverted/reverse" roadway median. Anybody heard of this before, and could you provide an image of this? A quick search turned up "Central reservation" on Wikipedia, with the comment below, but again, it's clear as mud to me.
One median of note is the "inverted" median of the Golden State Freeway (I-5) in the Tehachapi Mountains between Los Angeles, California and the San Joaquin Valley. For several miles the median is inverted — Northbound traffic is on the western roadway and southbound traffic on the eastern road.