Police cars usually have an antenna designed specially exclusively on their roof, but almost all taxis have an antenna which has been mounted by the taxi company later (using magnet, adhesive, or screwed onto the gutter), and thus the antenna cable is also exposed.
パトカーなどのアンテナは、屋根に直接、専用の物が取り付けられているが、タクシー用は、ほぼすべて後付け（マグネット、シール貼付、雨どいにネジ締め）であり、アンテナケーブルも露出している。