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550. Which TWO of the following correctly match light signals with their meanings?
- Flashing yellow light: Vehicles and horses can proceed while being careful of other forms of traffic and safety signs.
- Red light: Pedestrians can cross at the crosswalk with caution.
- Green arrow-shaped light: Vehicles and horses can proceed in the direction the arrow points.
- Yellow light: If vehicles and horses have already entered an intersection, they should stop within the intersection.
Answer : 1, 3