[phatskat]

Roads being a huge factor also plays into socioeconomic factors though, at least in some places. Take New York City for example, where the off-ramps for highways were purposefully planned to let traffic out in larger numbers in impoverished areas to keep the noise and pollution minimal for the more affluent burrows.

[tomrod]

Absolutely. Though, do note that, at least in the US, road network locations change slower than gentrification changes a neighborhoods socioeconomics.