Road Signs

Quick Road Sign Facts
State Highway
  • Roads with Route Numbers are owned and maintained by the State Highway Administration. 
  • Odd Numbered highways run north and south.
  • Even numbered highways run east and west.
Interstate System
On the interstate system, any 3 digit number beginning with an even number like I-495 and I-695 will travel in a circle around a metropolitan area and return to the main thoroughfare.

Road Lines
  • Yellow road lines are always on your left when driving. They are used to separate traffic.
  • Solid white edge lines mark the pavement to the right, "Keep White on Right".
Sign Colors
  • Construction and Maintenance signs are orange and black.
  • Guide signs are green and white.
  • Informational signs are blue and white.
  • Regulatory signs are red and white or black and white.
  • Warning signs are yellow and black.