Question You must yield for emergency vehicles: Answers Under no circumstances. When you see a flashing red or blue light or hear a siren. Only when other vehicles yield. None of the above. Explanation You must yield the right-of-way to any emergency vehicle that is using its siren or flashing lights. Take a FREE Practice Test Now This questions appears in the following tests: Florida Practice Test Maine Practice Test Oregon Practice Test New Hampshire Practice Test Michigan Practice Test Vermont Practice Test Nevada Practice Test North Dakota Practice Test Texas Practice Test Montana Practice Test Indiana Practice Test Utah Practice Test New Jersey Practice Test Minnesota Practice Test Colorado Practice Test Virginia Practice Test West Virginia Practice Test Rhode Island Practice Test Louisiana Practice Test North Carolina Practice Test Washington Practice Test Alaska Practice Test Massachusetts Practice Test Idaho Practice Test Wisconsin Practice Test