Drivers must understand that traffic laws them and should be supported and follows.

Drivers must understand that traffic laws help them and should be supported and followed.

Explanation:

Traffic laws imply a set of rules that order and direct vehicular traffic, in order to avoid accidents and generate as much traffic flow as possible without endangering the lives of drivers, passengers or walkers.

Therefore, traffic laws must be complied with, since their compliance is definitely nothing more than a help to drivers, so that they avoid problems when driving.

answer; the president uses mass media to gain support for policies;