2024 RI CDL Practice Test: Class B - Test 3 Based on 2024 RI CDL Handbook 21. How many mirrors are required for every registered vehicle? A 1 B 0 C 2 Next More 21/29 Progress 0 Errors Restart Next Next Class B - Test 3 Back to Test List Class B - Test 2 Class B - Test 4 Challenge Library 12 More RI CDL Practice Tests 12 Class B - Test 4 13 Class B - Test 5 14 Class B - Test 6 15 Class B - Test 7 16 HazMat - Test 17 HazMat - Test 2 18 HazMat - Test 3 19 HazMat - Test 4 20 HazMat - Test 5 21 HazMat - Test 6