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