Isn't this just sort of like selective enforcement? You commit a violation but it happens to be in a specific area so the fine is doubled? I guess they do that for school zones and speeding already as well as construction zones so this is not much different. Archive: https://archive.today/HvP8M From the post: "Commerce City police are upping the penalties for violations in four new "high traffic hazard zones," beginning Monday, Sgt. Nicholas Arias with the Commerce City Police Department told Denver7. If a driver commits a traffic violation in one of four areas of Commerce City, the fine doubles."