These handy green and white
signs called Mile Markers, mark the number of miles
it is from 0 or a beginning point for the roadway.
Interstate or major highway mile markers begin numbering
at the south or west end of the state, and continue
till the next border or end of highway. This can
be handy for determining your location and heading.
Say you were headed to Louisiana from Houston on
Interstate 10 and you noticed mile maker 55, you
know it is 55 miles to the border since you are