Speed Limit Signs 12x18

12x18 - R2-1-Modified Reflective Heavy Gauge Aluminum Speed Limit Signs. This size is a good choice for low speed streets or roads that want low profile signage. High Intensity Prismatic Reflective (HIP) Speed Limit Signs include: Better visibility at night, in stormy weather, and in areas with competing lights. Drivers recognize HIP signs more quickly, giving them more time to react. This improves traffic safety for everyone.