Mile Marker Sign: Meaning and What to Do
The narrow green sign reading MILE above a number is a reference location sign, posted every mile along freeways and many highways. The number counts miles from the point where the route enters the state, starting at the southern or western border, so it rises as you travel north or east. The design shown carries an example number.
Mile Marker Sign
Mile markers are the way to say where you are. Exit numbers on most freeways match the nearest mile marker, and emergency dispatchers, tow operators, and highway patrol all locate you by route and mile. Some highways add markers at each tenth of a mile.
What to do when you see the mile marker sign
Note the markers as you drive so that, if you break down or witness a crash, you can report your location as the route number, the direction, and the last mile marker you passed. Use them to estimate the distance to an exit whose number you know.
The signs it is confused with
Tests contrast the green mile marker with the green Exit sign, which also carries a number, and ask what the number counts. Exit numbers tell you where to leave; mile markers tell you where you are, and on most freeways the two match.
Signs are one topic of ten on every test
Every state practice test covers signs, signals, and markings among its ten topics, with every answer explained. Pick your state and see how its exam asks about signs like this one; it is free, with no sign-up.
Choose your stateQuestions about the mile marker sign
What does a mile marker sign mean?
You are that many miles from where the route entered the state, counting from the south or west border. It tells you where you are on the road.
Why do mile markers matter?
They are how you report your location in an emergency: route, direction, and the last marker you passed. Exit numbers on most freeways match them.
Which direction do the numbers increase?
Northbound and eastbound. Traveling south or west, the numbers fall toward zero at the state line.
What is a marker with a decimal?
An intermediate reference marker, posted at tenths of a mile on some highways for more precise location.
How does this sign appear on the written test?
In emergency-reporting questions and as a guide sign meaning question paired with exit numbers.