2024 OK CDL Practice Test: HazMat - Test 2 Based on 2024 OK CDL Handbook 28. Truck tractors built after March 1, 1997, must be equipped with: A Hydraulic brakes B ABS C A flag Next More 28/29 Progress 0 Errors Restart Next Next HazMat - Test 2 Back to Test List HazMat - Test HazMat - Test 3 Challenge Library 12 More OK CDL Practice Tests 18 HazMat - Test 3 19 HazMat - Test 4 20 HazMat - Test 5 21 HazMat - Test 6 22 Passenger - Test 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