It's interesting to note that many SF residents find the T 3rd Street light rail to be slower and less frequent than the buses that it replaced. I think subway

It's interesting to note that many SF residents find the T 3rd Street light rail to be slower and less frequent than the buses that it replaced. I think subways work well because of their grade separation and extreme high capacity, but most surface rights would be better served by buses than light rail, and you can still create separated bus lanes for bus rapid transit instead of separated light rail if you have the money to spend.