New Hampshire Permit Test 16 Question A diamond-shaped sign: Answers Alerts operators to school zones. Alerts operators to public recreation areas. Warns of existing or possible hazards. Warns of poor weather conditions. Explanation Diamond-shaped signs warn road users of existing or potential hazards. You will usually see these signs in yellow or orange. Answer Statistics 16.92 % of our users get this question wrong. This questions is relatively Easy. New Hampshire Permit Test This questions appears in the following tests: Kentucky Practice Test