StartMark 30mph Speed Roundels | Thermoplastic - TricolourOur 30 mph speed limit roundels are part of our range of road markings. You will find 30 mph roundels in villages and town centres all over the country. Used when entering the 30 mph zone and then often repeated every few hundred metres these roundels ensure that the speed limit is clear. These pre cut 30 mph speed limit roundels are a great alternative to hand painted roundels. This is because they are always the correct size and shape. There are