Question Use a turn signal: Answers When you’re planning to increase your speed. Only when there is a lot of traffic. Any time you plan on changing lanes. Only if it is dark outside. Explanation You should use a turn signal every time you plan to turn or change lanes, even if you think no one else is around to see it. Take a FREE Practice Test Now This questions appears in the following tests: Maine Practice Test Kentucky Practice Test New Jersey Practice Test Rhode Island Practice Test Alaska Practice Test New Mexico Practice Test Colorado Practice Test North Dakota Practice Test Washington Practice Test Arizona Practice Test Maryland Practice Test