Railways and public transport are grouped under infrastructure because even if climate change was not an issue, public transport is infrastructure that's good for people and the economy. There's plenty of statistics to support the idea that good public transport infrastructure has a wide range of benefits, including improved economic growth, that pre-dates climate change by decades, and will still be the case long after climate change is fixed. The Victorians didn't build railway lines all over Europe because trains are better for the climate than cars. :)