[Talk-us] Trunk

Martijn van Exel m at rtijn.org
Thu Oct 5 22:30:39 UTC 2017


Question for you all:

What make Michigan state routes 5 and 10[1] trunks rather than primaries?

To my mind these are highway=primary mainly because of at-grade
intersections.. I am still confused about what makes a trunk road in the
US. To my mind it's roads with no at-grade intersections but not built to
interstate standards / not having an interstate designation... I'm not
looking to open up a can of worms but I would really like to understand.

Martijn

[1] https://www.openstreetmap.org/#map=13/42.5188/-83.3982
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