2024 NH DMV Practice Test 18 Based on 2024 NH Driver's Handbook 14. A person's ability to drive safely can be impaired by A alcohol B All the others. C drugs, even if they are prescribed by a doctor D lack of sleep Next More 14/30 Progress 0 Errors Restart Next Next NH Permit Practice Test 18 Back to Test List NH Permit Practice Test 17 NH Permit Practice Test 19 Challenge Library 12 More NH DMV Practice Tests 1 NH Permit Practice Test 1 2 NH Permit Practice Test 2 19 NH Permit Practice Test 19 20 NH Permit Practice Test 20 21 NH Permit Practice Test 21 22 NH Permit Practice Test 22 23 NH Permit Practice Test 23 24 NH Permit Practice Test 24 25 NH Permit Practice Test 25 26 NH Permit Practice Test 26