10mph Speed Limit Sign Post Mounted Diagram 670 R2/RA2The 10 mph sign is primarily seen on private driveways, industrial estates and other areas where traffic speed needs to be restricted. This circular sign features a black 10 on a white reflective background with a red surround for maximum contrast. This 10mph sign is part of our range of speed limit signs and the wider permanent road sign range. On a day to day basis you will likely see these signs on commercial trading estates, supermarket car parks