Signalized Intersection Signs
Signalized Intersection Signs FAQ
What signs are used at a signalized intersection?
Signalized intersection signs (MUTCD R10 series) supplement the traffic signal. Common ones include No Turn On Red, Photo Enforced, Do Not Block Intersection, Left Turn Yield on Flashing Yellow Arrow, Turning Traffic Yield To Pedestrians, and pedestrian push-button and crosswalk signs.
What color is a No Turn on Red sign?
A No Turn on Red sign is a regulatory sign — a white rectangle with a black legend, and the symbol version (R10-11) adds a red circle and slash. It tells drivers not to turn while the signal is red. See our No Turn on Red Signs page for details.
What does a Photo Enforced sign mean?
A Photo Enforced sign warns drivers that the intersection uses automated cameras to record red-light or other violations. It is posted at signalized intersections where photo enforcement is in use.
What is a Left Turn Yield on Flashing Yellow Arrow sign?
The Left Turn Yield on Flashing Yellow Arrow sign (R10-12a) explains a flashing yellow arrow signal: left-turning drivers may proceed but must yield to oncoming traffic and pedestrians before turning.
What is a Do Not Block Intersection sign?
A Do Not Block Intersection sign (R10-7) tells drivers not to enter an intersection during a green light if they cannot fully clear it, keeping the intersection open for cross traffic when the light changes.
Are signalized intersection signs MUTCD compliant, and what materials are used?
The R10 series meets MUTCD specifications for public roads. Signs are made on rust-proof .080-inch aluminum with High Intensity Prismatic or Fluorescent reflective sheeting, and can be produced as custom signs.
Example Use:
At a busy intersection in the heart of the city, a Crosswalk push button sign is installed to prioritize pedestrian safety. When pedestrians approach the crosswalk and intend to cross the street, they press the button on the sign. Upon activation, the system communicates with the traffic light control mechanism, initiating a countdown. The vehicular traffic lights soon change to red, stopping the cars. Simultaneously, the pedestrian signal illuminates a walking figure, indicating it's safe to cross. This system ensures that the pedestrian has adequate time to traverse the street safely before the vehicular lights turn green again, thereby effectively reducing potential accidents or collisions between pedestrians and vehicles.
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