交通管理局

• 六(six; intersection)ASSOCIATIVE
• 乂(cross; intersect)PHONETIC

Two diagonal lines crossing like human legs stepping represent intersection and exchange.

• 辶(step; move)RADICAL
• 甬(passage; channel; path)PHONO-SEMANTIC

Following a clear pathway or passageway is the meaning of the character.

• ⺮(bamboo)RADICAL
• 官(official; manage)PHONO-SEMANTIC

A bamboo tube is managed by officials, so 管 means both tube and to manage.

• 王(jade; precious stone)RADICAL
• 里(village; mile)PHONO-SEMANTIC

Polishing rough jade layer by layer along the grain, like dividing the road mile by mile into neat sections.

• 尸(body; cover)RADICAL
• 口(mouth; door)ASSOCIATIVE

A mouth confined under a roof is restricted to a limited scope.