Re: NY Distance based interchange numbering legislation underway

"mkeen" <inksite@xxxxxxxxx> wrote in message
news:1181011619.788098.6550@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

2) It's hard to imagine given the current state of affairs, but won't
there eventually come a time when the US gathers enough collective
intelligence to migrate to the metric system? Are we not exacerbating
the problem with this project? (By the way, the Kilometer is a better
unit for exit numbers since it would be much more rare to have more
than one exit per Km than it is to have more than one exit per mile.)

Metric's not going to happen in the US, nor should it.


3) Can somebody explain to me how suffixes like A and B are preferable
to N, S, E, and W?

I agree with you here for cloverleaves and other interchange types that
serve different directions of roadway with different ramps: Cardinal
directions should be used to match whatever cardinal direction the divering
road is signed.

For several separate interchanges in the space of one mile, then the A...B
system can be used.

Adding interchanges in such a scheme should not be confusing either.

For instance, say at milepost 29 of I-53 (N-S route), there is a cloverleaf
interchange with SR 138 (E-W route). The exits should be numbered 29E-W. If,
1/2 mile up the road, a new diamond interchange is added to a local road,
that exit can become 29A, or 30, if 30 is not being used and the next exit
is not for several more miles. I fail to see how a 29E-W-A exit numbering
scheme is confusing.

Also, letters can fall out of order. Let's say that this cloverleaf
interchange was actually at milepost 29.7 and given the numbers 29A-B. If a
new diamond interchange were opened 1/2 mile south for a local road, that
exit would have to become 29C. Now, properly, going northbound, the
lettering sequence should increase even as the numbering sequence does; and
southbound, it should decrease. In this case, going northbound you would
encounter Exits 29C-A-B, and southbound, Exits 29B-A-C. I think this is more
confusing than coming across Exits 29A-E-W, or Exits 29W-E-A.

Chris Blaney


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