All this. To reduce the use of private cars. This can be done both urged people to change, there is a public bus or use the scale to force people using public transport.
The reduction of private car use. Both can be done to motivate people to change their use of public transport. Or a section of forcing people to use public transport.
The reduction of the use of private cars. Can do both urged the people come to use public transportation. Or a section to force people to use public transport.