2024 AR CDL Practice Test: Class C - Test Based on 2024 AR CDL Handbook 10. A placarded vehicle must have at least ______ identical placards. A Two. B One. C Four. D Three. Next More 10/30 Progress 0 Errors Restart Next Next Class C - Test Back to Test List Tank and Hazmat - Test 2 Class C - Test 2 Challenge Library 12 More AR CDL Practice Tests 1 Class A - Test 1 2 Class A - Test 2 3 Class A - Test 3 41 Class C - Test 2 42 Class C - Test 3 43 Class C - Test 4 44 Class C - Test 5 45 Bus - Test 46 Bus - Test 2 47 Bus - Test 3