A public transport system worthy of a small and medium European city: L.A.

Bus in Los Angeles.
Source: L.A Times, August 8th, 2019

If there are so many traffic jams and smog throughout the city, much of which is caused by motor vehicles, we might think that urban public transport does not exist but it is present and relatively well developed even if it does not prevent air pollution and traffic jams because the car is the first choice.