English Translation
This bus is capable of carrying 45 persons.
The correct spelling is 運ぶこと, not 運ぶ事. We don’t spell it in Kanji when こと functions as a gerund.
Also, it’s a robotic word-for-word although it’s understandable.
My alternative translation is:
このバスは定員45名だ。（このバスはていいんよんじゅうごめいだ）
定員 means “a capacity” of vehicle or venue. It’s a frequent term.