2024 CO CDL Practice Test: Class B - Test 3 Based on 2024 CO CDL Handbook 7. ________ need to be able to recognize hazardous cargo. A The students. B The parents. C The school board. D All drivers. Next More 7/29 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 CO 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