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Michigan driving lesson · Signs, Signals, and Pavement Markings

Sign shapes, colors and route markers

A 2-minute lesson from the Michigan course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
2 minutes
Course unit
Signs, Signals, and Pavement Markings
Checkpoint questions
6
Source pages
55, 56

You can often read a sign before you can read its words. Its shape and its color tell you what kind of message it carries — a law, a warning, a direction or a service.

The nine basic sign shapes:

  • Octagon: STOP
  • Triangle: YIELD
  • Diamond: WARNING
  • Pentagon: SCHOOL
  • Pennant: WARNING / NO PASSING
  • Horizontal rectangle: DIRECTIONS
  • Vertical rectangle: LAW
  • Round: RAILROAD CROSSING
  • Crossbuck: RAILROAD CROSSING
Handbook p. 55 ↗
Octagon shape (stop)
Octagon: STOP
Pentagon shape (school)
Pentagon: SCHOOL
Pennant shape (warning / no passing)
Pennant: WARNING / NO PASSING
Round shape (railroad crossing)
Round: RAILROAD CROSSING

Sign colors:

  • Red: stop / prohibited / forbidden
  • Blue: service / hospitality
  • Green: directions / guidance
  • Yellow: caution / general warning
  • Orange: caution for construction or maintenance
  • Black: regulatory — legally allowed or prohibited
  • White: regulatory — legally allowed or prohibited
  • Fluorescent yellow-green: school, pedestrian or bicycle caution
  • Fluorescent pink: incident, emergency or unplanned event
  • Brown: recreation / cultural interest
Handbook p. 56 ↗

Know the rule

Regulatory signs tell you about specific laws and regulate the speed and movement of traffic. They are usually rectangular, in white and black, red-white-black, or red and white.

Handbook p. 56 ↗

Route markers:

  • Interstate freeway sign (red, white and blue shield)
  • U.S. highway sign
  • State highway sign (M-route in a diamond)
  • County route marker
Handbook p. 56 ↗
Interstate route marker
Interstate freeway sign
State route marker
State highway sign (M-32)

Put it into practice

You see a fluorescent pink diamond sign ahead. Pink means an incident, emergency or unplanned event is affecting traffic — expect to be guided around or through it.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

What shape is a STOP sign?
  1. Octagon
  2. Pentagon
  3. Diamond
  4. Triangle

Answer: Octagon

A STOP sign is an octagon.

Handbook p. 55 ↗
What shape is a YIELD sign?
  1. Pentagon
  2. Round
  3. Triangle
  4. Rectangle

Answer: Triangle

A YIELD sign is a triangle.

Handbook p. 55 ↗
What shape is a school zone sign?
  1. Round
  2. Horizontal rectangle
  3. Crossbuck
  4. Pentagon

Answer: Pentagon

A school zone sign is shaped like a pentagon.

Handbook p. 55 ↗
What color are stop and prohibition signs?
  1. Red
  2. Blue
  3. Brown
  4. Green

Answer: Red

Red indicates stop, prohibited, or forbidden.

Handbook p. 56 ↗
What does a blue traffic sign typically indicate?
  1. Recreation area
  2. Regulatory law
  3. Services
  4. Warning

Answer: Services

Blue signs indicate service or hospitality information, like gas or food.

Handbook p. 56 ↗
What color is used for an incident, emergency, or unplanned traffic event sign?
  1. Fluorescent pink
  2. Fluorescent orange
  3. Fluorescent yellow-green
  4. Bright red

Answer: Fluorescent pink

Fluorescent pink indicates an incident, emergency, or unplanned event.

Handbook p. 56 ↗
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