They should make pedestrian-only streets in most dense places of Manhattan and use these money to improve public transportation. Even just a few blocks of no cars would make a huge difference for livability of the city center.
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https://ny.curbed.com/2017/4/19/15358234/times-square-snohet...
> “Bowtie” bounded by Broadway and Seventh Avenue between 42nd and 47th Streets.