Downward-facing triangular signs: 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 Downward-facing triangular signs: Answers Tell riders to yield. Indicate school zones. Indicate construction zones. Tell riders to speed up. Explanation Downward-facing triangular signs usually indicate that road users should yield. Once the road is clear of traffic, bicycles, or pedestrians and it is safe to do so, riders may proceed.