Roundabout ahead sign
A yellow diamond with three arrows following each other round a circle. It warns of a roundabout or traffic circle ahead.
How to read it
The MUTCD calls it the Circular Intersection sign. It is installed ahead of a roundabout on approaches with a speed limit of 40 mph or more, and may be used on others. A plaque below it may spell out ROUNDABOUT or TRAFFIC CIRCLE.
Also searched as: circular intersection sign.
Rules vary by state and country. This explains the sign's standard meaning in the U.S. Manual on Uniform Traffic Control Devices; it isn't legal advice.
Look-alikes
At the roundabout itself, a Roundabout Circulation plaque (R6-5P) may sit below the YIELD sign on each approach, where the central island has no room for signs. That plaque is part of the regulatory signs at the entry; the yellow diamond is the warning in advance.
What the handbooks say
Florida's handbook says traffic in a roundabout travels one way, counter-clockwise, and that drivers entering must yield to traffic already in it. It calls this sign Roundabout Circle; Michigan's manual calls it Roundabout Ahead.
In other countries
In Britain a red warning triangle marks a roundabout ahead. A mini-roundabout has a blue circular sign, and the Department for Transport's guide says to give way there to traffic from the immediate right.
Read next
More road signs
The same shape elsewhere
Browse symbols drawn with arrows, circles or diamonds.
Sources
- MUTCD 2009 Edition, Chapter 2C: Warning Signs and Object Markers, MUTCD 2009, Part 2, U.S. Federal Highway Administration, Section 2C.46
- Official Florida Driver License Handbook, rev. 08/2023, Florida Department of Highway Safety and Motor Vehicles, p. 50; p. 63
- What Every Driver Must Know, Michigan driver manual, Michigan Department of State, Chapter 5, sign 43
- Manual on Uniform Traffic Control Devices for Streets and Highways, 11th edition, MUTCD, U.S. Federal Highway Administration, Section 2C.41, paras 02, 04 (printed p. 180); Section 2B.51, para 01 (p. 118)
- Know Your Traffic Signs, Sixth edition, 2023, UK Department for Transport, pp. 9, 10, 20
Researched, edited and approved by Rory Hansen before publishing. Last reviewed October 3, 2026. How we research
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