Pop quiz hotshot: Think you can tell the difference between a roadway interchange and a Celtic Knot?
On this St. Patty's day, we’re tracing the hypnotic patterns and the interlacing lines of the Celtic knot, cultivating Zen for tomorrow’s hours of pub quiz. Evoking an interconnectedness, a non-differentiation between beginning and end, Celtic knots also conjure something quite a bit less grand: long commutes! Traffic! Road rage!
Wait, what? Got into the Jameson a little early have we? No, we haven’t. Last chance!
But we have noticed a few similarities between the noble knot and something altogether different: The ubiquitous roadway interchange.
FULL STORY: Roadway Interchange or Celtic Knot?

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US High Speed Rail Association
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