We're getting 15 billion for transit too .. separate from the 15b for roads and bridges. Pretty much everything will be improved or expanded,: roads, busways, rail lines, etc. From a carbon reduction perspective it's actually better to expand all forms of transit inward, including roads, because it also encourages economic growth to be inward as well. In this case the "induced demand" that some like to mention is used to the city proper's advantage as opposed to pushing the flow to the suburbs and outlying areas. When more roads, train lines, etc are built outward, the opposite happens and urban sprawl is encouraged resulting in large amounts of deforestation which has a worse impact on carbon reduction due to the increased fuel efficiency of cars and their ongoing transition to electric. In regards to regional rail, it's awesome that there are a lot of available rail rights of way already so hopefully the airport line and a couple other lines get built...with the type of money we seem to be getting it appears that may happen.