Do you currently have car insurance? Yes I have insurance. Great, you're all set! Click here if you still want to compare rates. No, I need insurance and I want to compare options. Before you start the test, please answer the following question regarding your insurance status. Without insurance you will not be able to drive in California Question How many daily hours of sleep does an adult need to maintain alertness? Answers Six to seven Seven to eight Eight to nine Four to five Explanation Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night. Take a FREE Practice Test Now This questions appears in the following tests: Idaho Knowledge Test Class A ,