Color-Code Roads and Highways for Cardinal Directions

Color-Code Roads and Highways for Cardinal Directions - Jake - 10-25-2023

How much gas is list every year to people driving the wrong direction?  I know there have been a couple times for me that I've gotten on the highway going the wrong direction.  What if we painted the retaining walls color codes for direction?  Say Blue for N, red for S green for E and yellow for W?  How cool would that look?