- Radburn, New Jersey was a planned community developed in the 1920s to separate pedestrian and vehicular traffic through superblocks and cul-de-sacs. It aimed to provide efficient housing and preserve open space. However, residents primarily used their homes' rear vehicle entrances rather than the pedestrian greenways as intended, and preferred more private yard space than Radburn's clustered design allowed. Financial troubles during the Great Depression also contributed to Radburn's failure to fully achieve its visionary planning objectives.