Quote:
Originally Posted by Acajack
Yes and no.
It doesn't make that much sense to have the KM-based exits if you don't know what the routing for an eventual divided freeway (at least on some segments) is going to be, as then you'll have to change them all again. And people will be used to the old exit numbers by that time. So you end up with temporary signs with both the NEW and OLD exit numbers, like I've seen elsewhere.
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That’s a good point.
N.B. had to do that with their Highway 2 and it wasn’t fun.
That’s also why ON-417 starts the number from east to west, against the usual convention.
Quebec doesn’t believe in saving the numbers for later, so we end up with odd cases like A50 starting at KM 134 (because it was envisioned to go to Pembroke back in the days), Route 175 starting at KM 74 after A73 exit 182, and A85 Exit 85 at KM 86.5…
Then again, even in Ontario, upgrading RIRO expressways like 11 and 115 may introduce discrepancy between actually KM and exit numbers too…
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