fresnel149:

tilthat:

TIL since the 1990s, Carmel, Indiana has been replacing all signaled intersections with roundabouts. Benefits include gas savings of 24k gallons/year per roundabout; construction costs $125,000 less per intersection; injury accidents dropped by 80 percent and total accidents dropped by 40 percent.

via reddit.com

Tearing something apart and re-building it for less than the original cost is not “saving money”, it’s “not quite spending twice as much”.