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Some traffic signals have a combination of “protected” turn arrow signals and “unprotected” circular signals based on traffic demand. At these intersections, both through traffic and turning traffic are controlled by circular signals if no arrow signal is displayed. When arrow and circular signals are both displayed, turning traffic is controlled by the arrow signals and through traffic is controlled by the circular signals. Below are examples of combination signal displays you 

may see. 

When approaching an intersection with a traffic light that has malfunctioned due to a power outage or some other problem, you should approach the intersection and proceed as though the intersection is controlled by a stop sign on all approaches to the intersection. This does not apply if a law enforcement officer or another authorized person is directing traffic, or if another type of traffic control device is in operation. 

## Flashing Signals 

The flashing red signal has the same meaning as the stop sign: stop and do not proceed to move until you can enter the intersection without interfering with approaching traffic. The flashing yellow signal has the same meaning as a warning sign. Slow down and proceed with caution. 

## Flashing Yellow Arrow Traffic Signal Heads (left and right turns) 

This traffic signal head is designed to make it easier for drivers to know what to do when making a turn. The traffic signal head has a flashing yellow arrow section. When the flashing yellow arrow is shown, the indicated turn is permitted but drivers must yield to oncoming traffic and pedestrians. 

Below are some examples of what this style traffic signal head looks like and what drivers should do as the light changes: 

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Solid Red Arrow: Stop. No turns are allowed. 

Solid Yellow Arrow:  Prepare to stop. 

Flashing Yellow Arrow:  Turns are allowed, but first they must yield to oncoming traffic and pedestrians. 

Solid Green Arrow:  Turns are allowed, and they should not need to yield to oncoming traffic and pedestrians. Proceed with caution. U-turning traffic should yield to opposing right turning traffic when both have green arrow. 

*For right turn signal heads, a steady red circular signal may be provided rather than a red arrow. 

* 

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