Comments on: <![CDATA[Interchange spiral]]> http://sploid.gizmodo.com/this-highway-interchange-is-so-damn-cool-i-thought-it-w-1536854603 Tue, 02 Jun 2015 14:30:43 +0000 hourly 1 By: H James Lucas https://persquaremile.com/2014/03/05/interchange-spiral/#comment-5819 Wed, 05 Mar 2014 23:42:03 +0000 https://persquaremile.com/?p=6291#comment-5819 This interchange style comes with one big trade-off: Because all the exits come before the entrances, there is no need for entering and exiting vehicles to weave, which is great from an efficiency standpoint. The catch is that a car can’t take two ramps and end up going back in the direction from which it came, which is a pretty essential manœuver in many suburban areas.

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