America as a whole, cities, states, federal government, stopped investing seriously into mass transit decades ago. In the '50s the government with big money from car companies, the major tire companies, and any type of business that is car related had bought off the cities, states and federal governments.
The only incentive to have any additions or improvements to bus or train lines is that there are so many cars on the road today, it hurting the economy. Cities not known for major rush hour traffic now have it.
Everyone has a car. 50 years ago, the average family had 1 car. 25, 30 years ago, both parents did because both worked. Today, if a family has 2 kids once they reach HS they got a car, at least in the burbs, so the average suburban family has gone from 1 car to 4 in 50 years.
America should have been the first country with a bullet train. But the airline and car companies killed that. Japan, Korea, European countries, all have high speed rail. There are cities that are 2 and a half hours drive from each other in Korea (Daejeon to Seoul) and their high speed rail gets them to each other in an hour. Imagine getting from NYC to Philly in one hour? Or San Diego to Los Angeles in one hour?
Once you see the high speed trains in Spain, Korea, Japan, France, you will be pissed. The government knows 95% of Americans won't see it firsthand.
So, we are stuck with bus lines that are partially homeless shelters in Los Angeles and subways that house the homeless in NYC. Lastly, the cities with subways that were built literally over 100 years ago, are so decrepit they can have collapse at anytime. There are areas on the train lines in NYC, Chicago, Philadelphia that the Department of Transportation knows isn't safe, hasn't been able to fix it for whatever reasons and can have a minor or major incident at any time.