StartMark 15mph Speed Roundels | Thermoplastic - TricolourOur 15mph speed limit roundels are part of our range of speed limit roundels. 10mph roundels are most commonly found in supermarket car parks, airports and distribution hubs. They are excellent hard wearing markings that offer a further marking alongside road signs. These pre cut 15mph speed limit roundels are a great alternative to hand painted roundels. This is because they are always the correct size and shape. There are several other benefits to