public transportation

US /ˌpʌb.lɪk træn.spɚˈteɪ.ʃən/
UK /ˌpʌb.lɪk træn.spɚˈteɪ.ʃən/
"public transportation" picture
1.

a system of buses, trains, etc., that is used by the public

:
I usually take public transportation to work.
The city is investing more in public transportation infrastructure.