A yellow arrow traffic light means that you should yield in the direction you are going. These are often in place when you are turning left.
In the U.S.A it means you have the right of way but proceed with caution.
Nothing. there is no blue light.
If the traffic light is not powered, you are to treat it as a all-way stop sign. I'm assuming that's what you mean by that. If the traffic light is broken, likely there will be utility workers out there working to fix it and you follow their instructions if any.
They're an additional feature to focus your attention towards the traffic light. The human eye is quicker to catch a flashing light than a steady light.
It stands for speed and precision.
A yellow arrow traffic light means that you should yield in the direction you are going. These are often in place when you are turning left.
A flashing yellow arrow light means you may turn left, but you must yield to oncoming traffic and pedestrians.
A solid yellow arrow at a traffic light means that the signal is about to change from a green arrow to a red arrow and you should prepare to stop. It usually indicates that you should clear the intersection if you are already in it, but not make any new turns.
A yellow arrow signal at a traffic intersection means that the signal is about to change from green to red, and you should prepare to stop if you are able to do so safely.
A flashing yellow arrow signal means you can turn left, but you must yield to oncoming traffic and pedestrians.
A yellow arrow at an intersection means that the signal is about to change from green to red, and you should prepare to stop or yield to oncoming traffic.
A yellow arrow sign on the road typically indicates that drivers should proceed with caution and be prepared to yield to oncoming traffic or pedestrians.
It means stop first then can proceed if clear
The yellow light on a traffic signal means that the light is about to turn red. It serves as a warning for drivers to slow down and prepare to stop.
The green arrow is what is often known as a "filter." This means vehicles are permitted to proceed with caution in the direction indicated by the arrow.
A yellow traffic light means to slow down or stop completely. When the light is yellow it is about to change to red in a few seconds. Contrary to popular belief by many drivers yellow does not mean speed up.
On traffic lights it means slow down.