NevadaNevada has just started using the MUTCD Enhanced Reference Location Signs about 6 years ago. They are not widespread, but are being deployed with new construction or reconstruction/maintenance projects
Interstates only or all freeways: Interstates only (although Clark County 215 also uses them, but that's a future interstate)
Urban areas only or throughout the state: Throughout the state (to my knowledge, but thus far have seen them in primarily urban or higher-trafficked corridors)
Color (normally green or blue): Green
Interval (most common I see are 0.1 and 0.2): integer miles
.0 on whole miles (Yes or No): No
Placement in median or right shoulder: Right shoulder typically (although I-580's mile 1 is in the median for some reason)
Nevada is like California where route mileage resets at county lines on all state and US highways, although NDOT still calls them a milepost (instead of Caltrans' "postmile" nomenclature). Around the same timeframe, NDOT has begun using what they call "Enhanced Mileposts" along state/US highway projects. Info:
Interstates only or all freeways: State and US highways, from multi-lane divided to two-lane
Urban areas only or throughout the state: Rural areas only
Color (normally green or blue): white
Interval (most common I see are 0.1 and 0.2): integer miles
.0 on whole miles (Yes or No): no
Placement in median or right shoulder: Right shoulder on divided highways. Two-lane highways employ a back-to-back mounting posted on the right shoulder of the direction of increasing mileage
Any more info to add: Route shield is shown with no cardinal direction. Also the two-letter county code is listed, and the mile number is turned sideways (not unlike the standard NDOT milepost). More info and examples in
this thread on the Pacific Southwest board.