The shape of warning signs are:
- Correct answer: Usually triangular with its top pointing upwards.
- Almost always round.
- Square or rectangle.
- Usually triangular with its top pointing downwards.
Why this is the answer
The correct answer in the official bank: Usually triangular with its top pointing upwards.
Warning signs warn of a danger or a change in the road ahead. They are usually a triangle with its top pointing upwards, with a red border. A triangle with its top pointing downwards is a shape unique to the "right of way" sign. Round signs are mainly regulatory, prohibition or mandatory signs, and square or rectangular signs are mainly information and guidance signs.