If you see a decimal point on a mile marker sign, there's a good reason why

Mile marker signs are an important addition to any highway, but what about those mile marker signs with decimal points?

New signs on freeway mark a milestone in highway history

Sharp-eyed motorists on Oahu may have glimpsed unique signs posted recently at a few spots along the H-1, H-2 and H-3 freeways. The Hawaii Department of Transportation made and installed the signs ...