2024 CO CDL Practice Test: HazMat - Test 4 Based on 2024 CO CDL Handbook 9. How many feet can a school bus' blind spot extend? A 100 ft. B 300 ft. C 200 ft. D 400 ft. Next More 9/29 Progress 0 Errors Restart Next Next HazMat - Test 4 Back to Test List HazMat - Test 3 HazMat - Test 5 Challenge Library 12 More CO CDL Practice Tests 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 28 Double and Triples - Test 5 29 Tank - Test