Traffic signal lights — Iowa Permit Test

At a solid red light you must come to a complete stop.

A red light means cross traffic has the right to go. If you roll on, you drive into their path.

Solid red Come to a complete stop.

Treat a flashing red light the same as a stop sign.

A flashing red light often hangs where a signal is broken or traffic is light. You still stop fully, then go when it is clear.

Flashing red Treat it the same as a stop sign.

At a solid yellow light, do not enter the intersection if you can stop safely; if you cannot stop safely, go through with caution.

Yellow means red is coming. Stopping when you can keeps you from being in the middle when cross traffic starts.

Do not enter the intersection if you can stop safely.

A flashing yellow light means proceed with caution, yielding to vehicles and pedestrians, and go when it is safe.

A flashing yellow light does not give you the road. Others may be crossing, so you slow and look before you go.

Flashing yellow Proceed with caution. Yield to vehicles and pedestrians and proceed when it is safe.

A solid green light means go, but only when the intersection is clear; yield to vehicles and pedestrians still in it.

When a light changes, some cars and walkers may still be caught in the middle. Let them get out before you move in.

Go, but only when the intersection is clear.

You must follow directions from law enforcement, highway workers or school crossing guards who are directing traffic.

A person directing traffic can see a crash, a closed road or children crossing that a signal cannot. Do what they tell you.

In addition to traffic signals, traffic control can be provided by law enforcement, highway personnel, or school crossing guards. You must follow directions from these persons.

What must you do at a solid red traffic light?

Come to a complete stop. A red light means cross traffic has the right to go. If you roll on, you drive into their path. Iowa Driver's License Manual, p.11: “Solid red Come to a complete stop.”