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 If hydraulic brakes fail, a driver can reduce their speed by: Answers Shifting into a higher gear. Shifting into a lower gear. Finding a hill. Letting the truck run out of gas. Explanation If your hydraulic bakes fail, shifting into a lower gear can help slow your vehicle down. Take a FREE Practice Test Now This questions appears in the following tests: West Virginia Knowledge Test Class A , South Carolina Knowledge Test Class B , Texas Knowledge Test Class B , Connecticut Double ,