This 12cm x 12cm is the best suitable size new driver self adhesive decal sticker, sticks anywhere, especially on the body, glass or plastic bumper, and doesn't need to be taken off before car wash. Yellow color of Road warning signs, black block letter black border line design, easily have attention far away. Reduce road rage and accidents for rookie drivers. To ensure new driver is noticed while navigating the roads and learning to drive Once other drivers realize you are learning to drive they will give you space and respect, reducing the likelihood of an accident The reflective new driver signs have the same properties as a street sign when light shines onto it, making it a great way to protect your driver during night driving Safety yellow engineer grade reflective for greatest visibility both during day & night