Road Signs: Sign Colors
12 questions in the bank cover this topic. Everything below is drawn from the sources those questions cite.
Sources: MUTCD 11th Ed. Section 1D.05
What you need to know
MUTCD 1D.05 assigns red to stop or prohibition.
It appears on STOP, YIELD, DO NOT ENTER and WRONG WAY signs, and on the prohibition slash of a regulatory sign.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns yellow to warning.
A yellow sign tells you about a condition ahead, it does not impose a rule, which is the difference between a warning sign and a regulatory one.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns orange to temporary traffic control, which is why work zone signs are orange rather than yellow.
Seeing orange means the condition is temporary and probably involves workers.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns green to permitted movements and direction guidance.
Mileage and destination signs are green, and so is the permitted-movement arrow on a lane-use sign.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns blue to road-user services, tourist information and evacuation routes.
Fuel, food, lodging and hospital signs are blue. Brown, not blue, is used for recreational and cultural sites.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns brown to recreational and cultural interest area guidance, so national parks, historic sites and campgrounds are brown.
Blue covers commercial services.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns fluorescent pink to incident management.
Pink marks an unplanned event such as a crash or a spill, as distinct from orange, which marks planned temporary traffic control.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns fluorescent yellow-green to warnings about people: pedestrians, bicycles, playgrounds, school buses and schools.
It is deliberately distinct from ordinary yellow so these warnings stand out. Those five share the fluorescent yellow-green assignment.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 reserves purple for lanes restricted to vehicles with registered electronic toll collection accounts.
Entering a purple-marked lane without an account means a violation notice. ETC accounts must be registered in advance for the lane to be used.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 assigns both black and white to regulation.
A speed limit sign is a black legend on a white background, and both colors carry the regulatory meaning. Red is reserved for stop or prohibition specifically.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 lists 13 colors but assigns general meanings to only 11.
Coral and light blue are reserved for future designation, which is why the section says it establishes meanings for 11 of 13.
The general meaning of the 13 colors shall be as follows: A. Black—regulation B. Blue—road-user services guidance, tourist information, and evacuation route C. Brown—recreational and cultural interest area guidance D. Coral—reserved for future designation (see Paragraph 4 of this Section) E. Fluorescent Pink—incident management F. Fluorescent Yellow-Green—pedestrian warning, bicycle warning, playground warning, school bus warning, and school warning G. Green—indicated movements or actions permitted and direction guidance H. Light Blue—reserved for future designation (see Paragraph 4 of this Section) I. Orange—temporary traffic control J. Purple—restricted to use only by vehicles with registered electronic toll collection (ETC) accounts K. Red—stop or prohibition L. White—regulation M. Yellow—warning
MUTCD 11th Ed. Section 1D.05
MUTCD 1D.05 states the colors may be used only as prescribed.
The entire value of a color code is that it means the same thing everywhere, so local variation would defeat it.
These colors shall be used only as prescribed for the specific devices or applications throughout this Manual.
MUTCD 11th Ed. Section 1D.05
Check yourself
- What is the meaning of red on a traffic sign?
- What is the meaning of yellow on a traffic sign?
- What is the meaning of orange on a traffic sign?
- What is the meaning of green on a traffic sign?
- What is the meaning of blue on a traffic sign?
- What is the meaning of brown on a traffic sign?
- What is the meaning of fluorescent pink on a traffic sign?
- What is the meaning of fluorescent yellow-green on a traffic sign?
- What is the meaning of purple on a traffic sign?
- What two colors does the manual assign to regulation on the signs you read?
- What two MUTCD colors are reserved for future designation and currently carry no assigned meaning?
- May a jurisdiction use a sign color for a purpose the manual does not prescribe?
Answers are in the practice test for this topic.