roadblock
Road traffic control
Barricade
Boom barrier
Braess's paradox
Illinois v. Lidster
Safety barrier
Traffic break
/suto3/google.iconroadblock
/suto3/Google画像検索.iconroadblock
/suto3/Google定義検索.icon roadblock
/suto3/wikipedia.iconroadblock
/suto3/weblio.icon roadblock
/suto3/kotobank.icon roadblock
/suto3/jisho.icon roadblock