Idaho Public Driver Education
Signs, Signals, & Roadway Markings
Colors Have Meaning
Red
Green
Blue
Yellow
Black
Orange
White
Brown
Shapes Have Meaning
Octagon
Rectangle
Triangle
Pennant
Diamond
Rectangle
Pentagon
Circle
Crossbuck
Traffic signs have three purposes:
1. Regulate traffic, movement or parking
2. Warn of potential dangers or road conditions
3. Provide information and guidance
Three Types of Signs
Regulatory
Warning
Guide
Signs that require obedience!
Where are they located?
Where must drivers stop?
The 60 Second Driver
Four-Way Stops
• The 60 Second Driver
Where are they located?
When must drivers yield?
Yield Signs
• The 60 Second Driver
SPEED LIMIT SIGNS
Speed Limits
 Urban Areas
 Parks
 Rural Interstate
 Urban Interstate
 School Zones
Other Regulatory Signs
WARNING
SIGNS
Give you advanced warning of a hazard
Yellow and black is the most eye-catching color combination!
Railroad Crossing Warnings
RR sign or RR painted
on the pavement are
advanced warning
signs.
Crossbucks are yield signs.
The train has the right-of-way!
Flashing red lights
Bells
Gates
If you hear or see a train
ORANGE is for Construction
REMEMBER
 Common Sense
 Caution
 Concentration
Types of Work Zones
Stationary
Moving
Work Areas
Work Areas
Markings Indicating Drivers are
Entering a Work Zone
Work Zones Areas
Work
Area
Buffer
Transition
Advance
Warning
E
N
D
Tips for Driving Through
Work Zones:
 Fines double in a work
zone!
 Proceed with extreme
caution
 Drive at the posted speed
 Watch out for workers
 Stay in your lane
 Report unsafe conditions
Guide you to a Location
Roadway Information
US Route Marker
Services
Recreation
Signals
o Steady lights
o Flashing lights
o Signal/Sign combinations
NO
TURN
ON
RED
Dog House Signals
Dog house signals are being
replaced by the type
seen at right which allow for a
flashing yellow light instead of
the solid green light that was
confusing to some drivers.
When the Light Turns Green
• The 60 Second Driver
Yellow Lights
• The 60 Second Driver
Pavement Markings
Multi-lane
Two lane rural
Left turn
only lane
ONE Way
TWO Way
Stop lines
Cross Walks
YELLOW LINES
• ALWAYS KEEP TO THE RIGHT OF A YELLOW LINE
BROKEN YELLOW LINES
• SEPARATES TRAFFIC GOING IN
OPPOSITE DIRECTIONS
• BOTH DIRECTIONS MAY CROSS THIS LINE
YELLOW DOTS
• SEPARATES TRAFFIC
GOING IN OPPOSITE
DIRECTIONS
• LANE GUIDE MARKERS
• KEEP TO THE RIGHT OF
THIS LINE
SOLID YELLOW LINE
• SEPARATES TRAFFIC GOING IN
OPPOSITE DIRECTIONS
• KEEP TO THE RIGHT OF THIS LINE
• DO NOT CROSS EXCEPT WHEN
TURNING LEFT OFF OF THE
ROADWAY
DOUBLE SOLID
YELLOW LINES
• SEPARATES TRAFFIC GOING IN OPPOSITE
DIRECTIONS
• KEEP TO THE RIGHT
• BOTH DIRECTIONS OF TRAFFIC MAY NOT
CROSS
• BOTH DIRECTIONS CANNOT PASS
• LEFT TURNS FROM ROADWAY PERMITTED
• PASSING IS PERMITTED
SOLID YELLOW WITH A YELLOW
BROKEN LINE
• TRAFFIC WITH THE SOLID
LINE CANNOT PASS
• TRAFFIC WITH THE
BROKEN LINE MAY PASS
Passing Lane Markings
WHITE LINES
SOLID WHITE
• DO NOT CROSS
• USUALLY A FOG LINE ALONG THE
RIGHT SIDE OF A ROADWAY
MARKING THE EDGE OF THE
TRAVEL PORTION OF A ROADWAY
BROKEN WHITE
• SEPARATES TRAFFIC GOING
IN THE SAME DIRECTION
• ONE WAY STREETS
• DRIVERS MAY CROSS THIS
LINE
• STAY TO THE LEFT OF THE FOG LINE
DOUBLE SOLID LINES
• SEPARATES TRAFFIC
GOING IN THE SAME
DIRECTION
• BOTH LANES OF TRAFFIC
CAN’T CROSS
BARRIER LINE
• TREAT THIS LINE AS IF IT
WERE A CONCRETE
BARRIER
• DO NOT CROSS
• THIS LINE IS TWICE AS WIDE
AS A NORMAL LANE LINE
Shared Turn Lanes
Car Pool
Lane