通行止め: dead end, road closure, cul-de-sac

警報: alarm / 刑法: (law) penal code, criminal law / 警砲: warning gun

opening to traffic

the above / the top (position or direction) / the surface of / superior in skill, age, level, etc.

in addition; furthermore / on top of (which)

peel / peel off / strip

coming off, peeling off

transportation / traffic

traffic, passage

Keep Left, a message on a sign indicating that travelers should keep to the left, especially drivers or walkers