Question This yellow sign means: Answers Controlled railroad ahead. Be prepared to stop if the light is flashing. There is a traffic signal ahead. Explanation A yellow sign with a traffic signal pictured indicates that there is a traffic signal is ahead. Be prepared to respond to the upcoming traffic signal. Pass your DMV Written Test with flying colors Take me to the cheat sheet California This questions appears in the following tests: California Practice Test 10 Alabama Practice Test 45 Arizona Practice Test 33 Arkansas Practice Test 36 California Practice Test 113 Connecticut Practice Test 54 Delaware Practice Test 18 Georgia Practice Test 87 Illinois Practice Test 70 Kansas Practice Test 17 Kentucky Practice Test 13 Maryland Practice Test 110 Mississippi Practice Test 111 South Dakota Practice Test 56 Tennessee Practice Test 75 Wyoming Practice Test 60