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 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.
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