Question A person's ability to drive can be impaired by: Answers Alcohol. Any medication. A lack of sleep. All of the above. Explanation The ability to drive safely is dependent on the driver being in good physical condition. Driving can be impaired by alcohol, legal and illegal drugs, and being drowsy. Pass your DMV Written Test with flying colors Take me to the cheat sheet Vermont This questions appears in the following tests: Colorado Practice Test 5 Florida Practice Test 18 Florida Practice Test 12 Hawaii Practice Test 26 Idaho Practice Test 9 Indiana Practice Test 17 Indiana Practice Test 14 Louisiana Practice Test 19 Maine Practice Test 44 Massachusetts Practice Test 22 Michigan Practice Test 4 Michigan Practice Test 10 Minnesota Practice Test 2 Missouri Practice Test 9 Montana Practice Test 18 Nevada Practice Test 13 Nevada Practice Test 1 New Hampshire Practice Test 34 New Hampshire Practice Test 40 New Jersey Practice Test 17 New Jersey Practice Test 42 New Mexico Practice Test 2 North Carolina Practice Test 13 North Dakota Practice Test 7 Oregon Practice Test 32 Oregon Practice Test 11 Rhode Island Practice Test 26 South Carolina Practice Test 29 Texas Practice Test 4 Utah Practice Test 13 Vermont Practice Test 5 Vermont Practice Test 9 Virginia Practice Test 33 Washington Practice Test 24 West Virginia Practice Test 1 Wisconsin Practice Test 41