Some precisions:
in France we 've 3 kinds of Police.
1) Police Municipale, what I translate nearly by "city Police" or "Local Police". Under the orders of the major.
Do you recognize the car ?
2) Police Nationale, what I translate nearly by "Federal Police", witch cover the whole territory, but rarely the roads and neither the small cities.
3) Gendarmerie, what I translate nearly by "Sheriff" or "State Trooper", to watch roads and country zones.
Subaru Imprezza.