So what should DC use for "state" highways as discussed here
. As there is only one - "DC-295," this shouldn't be a difficult decision. I've heard it called Anacostia Freeway, Kenilworth Ave, and 295. I'm not sure that I've really heard "route" or "highway" attached to the road. Seems that a display of "DC-295" and voice of "Dee See Two Ninety Five" would be best.