noun
Refers to the police force of a Japanese prefecture (都, 道, 府, or 県).
都道府県警察は、それぞれの地域の治安を守っている。
The prefectural police maintain public safety in their respective regions.
警察 is the general term for police, while 都道府県警察 specifically refers to the police force of a prefecture.
Compound of 都道府県 (todōfuken, 'prefectures') and 警察 (keisatsu, 'police').