Back to Iowa
Iowa Class C Knowledge Test Practice
Full test preview Question 1 of 25
0 answered 25 remaining
Passing target: 20/25 correct (TLA practice target)
Warning, Construction & Information SignsStandalone practice
What does the warning sign with a red-yellow-green signal symbol tell you?

Correct answer: A traffic signal is ahead, so be ready to obey its indication.
Why
Expect a signal ahead, possibly where it is not yet easy to see. Adjust your approach so you can respond safely when its indication becomes visible. The warning sign does not itself show the current red, yellow or green phase.
Verified against Iowa Driver's License Manual and current primary rules · Traffic signal beyond limited view
Report a question issueContinue learning
Related Iowa questions
The warning sign shows a side roadway joining while continuing as a separate lane. What should you expect?A blue highway guide sign displays a fuel or hospital symbol. What type of information does it normally provide?What does a brown road guide sign normally help you find?You see a yellow warning sign with vertical arrows and a height measurement. You are driving a tall vehicle. What should you do?What does the white crossbuck at a railroad crossing identify?A yellow diamond shows a black arrow curving to the right. What should the driver prepare to do?