2024 OH CDL Practice Test: Passenger - Test Based on 2024 OH CDL Handbook 6. A person should not smoke within __ feet of a vehicle placarded for Class 3 (flammable liquids) or Division 2.1 (gases). A 5 B 25 C 100 Next More 6/30 Progress 0 Errors Restart Next Next Passenger - Test Back to Test List HazMat - Test 6 Passenger - Test 2 Challenge Library 12 More OH CDL Practice Tests 23 Passenger - Test 2 24 Double and Triples - Test 25 Double and Triples - Test 2 26 Double and Triples - Test 3 27 Double and Triples - Test 4 28 Double and Triples - Test 5 29 Tank - Test 30 Tank - Test 2 31 Tank - Test 3 32 Tank - Test 4