Question What does an orange-colored sign indicate? Answers The start of a no passing zone. A railroad crossing is ahead. A school zone is ahead. The presence of construction work. Explanation Construction, maintenance, and emergency operations signs are generally orange with black symbols. Take a FREE Practice Test Now This questions appears in the following tests: Oklahoma Practice Test Nevada Practice Test Louisiana Practice Test Oregon Practice Test New York Practice Test Florida Practice Test Idaho Practice Test Ohio Practice Test New Hampshire Practice Test Indiana Practice Test Montana Practice Test North Dakota Practice Test New Jersey Practice Test Wisconsin Practice Test Utah Practice Test Michigan Practice Test Massachusetts Practice Test Washington Practice Test Maine Practice Test Texas Practice Test Nebraska Practice Test Colorado Practice Test North Carolina Practice Test West Virginia Practice Test Vermont Practice Test Hawaii Practice Test Missouri Practice Test Minnesota Practice Test