Ren GudinoFeb 223 minWhy Stop Signs Are Red: A Fascinating Origin StoryThe first stop signs were yellow and we can thank trains and reflectivity for the changes that finally led to our standard red stop signs!
Carrie CrockerOct 27, 20214 minThe Origin of the US Highway Mile MarkerEver wonder what those green signs with numbers on them are next to the road on the US highway? Well they actually have a purpose.
