The Traffic Test is passed when I’m finishing up a hangout with someone and one of us is driving the other back home or back to their car, and I find myself rooting for traffic. That’s how much I’m enjoying the time with them.
Passing the Traffic Test says a lot. It means I’m lost in the interaction, invigorated by it, and that I’m the complete opposite of bored.
To me, almost nothing is more critical in choosing a life partner than finding someone who passes the Traffic Test. When there are people in your life who do pass the Traffic Test, what a whopping shame it would be to spend 95% of the rest of your life with someone who doesn’t. [link]