What is the meaning of the sign?

1. ADriving on the road or lane is permitted to every vehicle, except a light rail and an electric bus.
2. BA lane on the road on which driving is forbidden to public transport.
3. CA lane for light rail, bus, taxi and a vehicle carrying the number of people indicated on the sign or more.
4. DDriving on the road or lane is permitted to every vehicle travelling on four wheels.

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