When approaching an intersection controlled by traffic lights where the green light has been on for a long time ('stale green light'), what should a defensive driver do?

1. Expect that the light may turn amber at any moment, check the rear-view mirror for trailing traffic, and be prepared to stop smoothly if the phase changes
2. Accelerate to maximum speed to ensure crossing before the change
3. Slam on the brakes immediately while the light is still green
4. Close eyes and honk the horn