What are you required to do according to the following road sign?

1. Drive faster when yellow light is displayed by the sign.
2. Always stop before the intersection with traffic lights.
3. Correct answer: Continue driving carefully and obey the traffic light.
4. Ignore this sign, as it obligates public vehicle drivers only.

WhyThe sign only warns of a traffic light ahead: keep driving and obey its signals. You do not always have to stop.