Look how frequent the streetcars are!
Why are the streetcars in the middle of the road?
Shouldn’t they be on the sides so people don’t have to play frogger to get to them?
The streetcar rails probably predate the dominance of the car. Before cars came along, traffic on most city streets was about 3 MPH, maybe 10 MPH at most. Take a look at the “A Trip Down Market Street” video taken in 1906 SF just before the big earthquake. It looks like chaos but it actually worked fairly well.