StartMark 20mph Speed Roundels | Thermoplastic - TricolourOur 20 mph speed limit roundels are part of our wider range of speed limit roundels They are most commonly used in areas where children or the elderly are likely to be in the road. This may be at a large hospital complex or in a residential area. They accompany standard road signs to further enhance the visibility of the speed limit. These pre cut 20 mph speed limit roundels are a great alternative to hand painted roundels. This is because they are