Question To be effective, an eye or face shield should: Answers Be easily broken. Restrict your view to both sides. Be tight to your face, not allowing eyeglasses to fit underneath. Fasten securely. Explanation To be effective, an eye or face shield must be free of scratches; be resistant to penetration; allow clear views to both sides; fasten securely; permit air to pass through to prevent fogging; and allow room for eyeglasses or sunglasses, if needed. This questions appears in the following tests: Maine Motorcycle Practice Test 16