Connecticut Permit Test 21 Question A diamond-shaped sign: Answers Alerts riders to school zones. Alerts riders 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 15.99 % of our users get this question wrong. This questions is relatively Easy. Connecticut Permit Test This questions appears in the following tests: Missouri Practice Test