This is the 16557th most frequent Polish word.
wjechała
"She/it drove in" or "entered (by vehicle)."
In this sentence, 'wjechał' is used to describe the motion of the bus entering a location (the intersection).
Kiedy bus wjechał na skrzyżowanie, musiał nagle się zatrzymać.
When the bus entered the intersection, it had to stop abruptly.
Here, 'wjechał' expresses an unintended motion where the car struck the pole.
Samochód niespodziewanie wjechał w słup.
The car unexpectedly hit the pole.
'Wjechał' in this context metaphorically conveys the manager confidently entering the scene or event.