If you are on an Interstate highway with the number I-65, you are traveling either north or south. Interstates are always north-south routes. These mile markers show the number of miles from when the route entered the state in which you are traveling. In some states, fines are doubled for traffic violations in work zones. These roadway markings make you feel and hear the traffic message.
Rumble strips are small indentations or narrow raised strips on the highway or shoulder.