Correct

车组

/ chē zǔ / 
Strokes

Example

As a Noun

crew (of a bus, train, etc)

1
Gōnggòng
公共
qìchē
汽车
  
/
lièchē
列车
chēzǔ
车组

bus/train crew

2
Chēzǔ
车组
rényuán
人员

crew member

As a Noun

group/set of cars