2024 OK Motorcycle Practice Test 8 Based on 2024 OK Motorcycle Handbook 15. Without a helmet, a motorcycle rider is ___________ times more likely to suffer a critical head injury in a crash. A Three B Five C Four D Six Next More 15/30 Progress 0 Errors Restart Next Next OK Motorcycle Practice Test 8 Back to Test List OK Motorcycle Practice Test 7 OK Motorcycle Practice Test 9 Challenge Library 12 More OK Motorcycle Practice Tests 1 OK Motorcycle Practice Test 1 2 OK Motorcycle Practice Test 2 3 OK Motorcycle Practice Test 3 4 OK Motorcycle Practice Test 4 5 OK Motorcycle Practice Test 5 6 OK Motorcycle Practice Test 6 7 OK Motorcycle Practice Test 7 9 OK Motorcycle Practice Test 9 10 OK Motorcycle Practice Test 10 11 OK Motorcycle Practice Test 11