Gta 5 train stopped?

Qu
- in PlayStation
2

Why does everyone say you can't stop the train in Gta 5? I play on the Ps4 and recently saw the train stop independently at some places several times. Is that normal or maybe a bug?

Vi

Only in Gta Online does it stop briefly at a certain point. Otherwise you really can't stop it

Qu

Ah ok then it was probably this place