Question Engine braking: Answers Is illegal. Is slowing down by turning the engine off. Is slowing down by downshifting. Is not encouraged because of the damage it does to the engine. Explanation Shifting to a lower gear produces an effect similar to applying the brakes. This is known as engine braking. Take a FREE Practice Test Now This questions appears in the following tests: Massachusetts Practice Test North Dakota Practice Test New Jersey Practice Test Ohio Practice Test Iowa Practice Test Louisiana Practice Test Maine Practice Test South Carolina Practice Test Oregon Practice Test Vermont Practice Test Indiana Practice Test Kentucky Practice Test Maryland Practice Test Alaska Practice Test Montana Practice Test Rhode Island Practice Test