THIS IS AN ECONOMICS QUESTION What are the two characteristics of public goods? Explain the significance of each for public provision as opposed to private provision of these goods. Using these ideas explain why the US Border patrol is supplied by the public sector while satellite TV is provided by the private sector.

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.