police car

: govern

: to control, regulate, or keep in order by use of police

: to make clean and put in order

: the internal organization or regulation of a political unit through exercise of governmental powers especially with respect to general comfort, health, morals, safety, or prosperity

: control and regulation of affairs affecting the general order and welfare of any unit or area

: the system of laws for effecting such control

: a vehicle moving on wheels: such as

: carriage, chariot

: a vehicle designed to move on rails (as of a railroad)