Question If you leave your vehicle unattended, you must: Answers Turn off the engine. Lock the ignition and remove the key. Set the parking brake. All of the above. Explanation When you leave your vehicle unattended, you must stop the engine, lock the ignition, remove the key from the ignition, and set the parking brake. Take a FREE Practice Test Now This questions appears in the following tests: Rhode Island Practice Test Missouri Practice Test Michigan Practice Test Massachusetts Practice Test Hawaii Practice Test Maine Practice Test Colorado Practice Test New Jersey Practice Test Wisconsin Practice Test West Virginia Practice Test Idaho Practice Test Vermont Practice Test Florida Practice Test Nevada Practice Test Indiana Practice Test Minnesota Practice Test Pennsylvania Practice Test Texas Practice Test New Hampshire Practice Test Washington Practice Test Iowa Practice Test Oregon Practice Test Alaska Practice Test Utah Practice Test Nebraska Practice Test North Dakota Practice Test North Carolina Practice Test Louisiana Practice Test Montana Practice Test