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 Anti-Lock Braking Systems (ABS): Answers Are not used on trucks. Are only used on tucks carrying hazardous materials. Allow drivers to stay in control when braking. Explanation An Anti-Lock Braking System (ABS) helps prevent wheels from locking up during a hard application of brakes. Take a FREE Practice Test Now This questions appears in the following tests: Iowa Knowledge Test Class A , Tennessee Bus ,