Windshield wiper blades should be: Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Windshield wiper blades should be: Answers Sticky. Clean. Brittle. Cracked. Explanation When inspecting your vehicle, you should check the wiper blades for damage, stiff rubber, and proper securement. Clean the blades if they are dirty. This questions appears in the following tests: Indiana Class B Knowledge Test Indiana Passenger South Dakota Class A Knowledge Test