The first one , It means that don't go over the speed limit.
The second one means that when the traffic lights are on green you have to move on , when the traffic lights are on red you have to stop .
The last one means that pedestrian prohibited .
The second one means that when the traffic lights are on green you have to move on , when the traffic lights are on red you have to stop .
The last one means that pedestrian prohibited .






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Explain in your own words what you have to do, or what each of these markings or signs indicates.