Looking at the recent spate of new 2di (and a 1di for good measure!) Interstate commissioning in recent years, something occurred to me: All the new -- and not previously deployed -- numbers commissioned since the turn of the century (6 so far) have been permutations of only 3 of the 10 available integers: 1, 2, and 4. I'm counting both those currently numbered in the field AND those with congressional commissioning but currently without signage save some "future corridor" indications. Here's the list:
(2004): I-22, (2012): I-11, (2013): I-2, (2014): I-41, (2015): I-14, (2016): I-42.
Nothing earthshaking -- just somewhat interesting! Since 4, 12, 24, and 44 are already in use, the only other 1/2/4 integral permutations left are 1 and 21. Something tells me we're pretty much done with this particular set!
The Southern I-87 begs to differ. It doesn't contain any of 1, 2 or 4.
Quote from: sparker on August 28, 2016, 05:39:23 AM
Looking at the recent spate of new 2di (and a 1di for good measure!) Interstate commissioning in recent years, something occurred to me: All the new -- and not previously deployed -- numbers commissioned since the turn of the century (6 so far) have been permutations of only 3 of the 10 available integers: 1, 2, and 4. I'm counting both those currently numbered in the field AND those with congressional commissioning but currently without signage save some "future corridor" indications. Here's the list:
(2004): I-22, (2012): I-11, (2013): I-2, (2014): I-41, (2015): I-14, (2016): I-42.
Nothing earthshaking -- just somewhat interesting! Since 4, 12, 24, and 44 are already in use, the only other 1/2/4 integral permutations left are 1 and 21. Something tells me we're pretty much done with this particular set!
Quote from: CNGL-Leudimin on August 28, 2016, 06:00:48 AM
The Southern I-87 begs to differ. It doesn't contain any of 1, 2 or 4.
That's why the disclaimer "not previously deployed" -- as a number in the field -- is included in the OP. I am referring to new, freshly-minted 1-or-2di designations, not 2nd sections of a previously used number.
An "integer" is any number that can be written without a decimal/fractional component (whole number). "1" is an integer, "50" is an integer, "-6" is an integer. Thus, there are way more than ten available integers.
It is more correct to say that the numbers have been permutations of three of the ten *digits*...
You are indeed correct, sir! I probably dozed off during that math class (we former liberal-arts majors tended to do that sort of thing!), and have a scrambled idea of the specific definitions. You as the mod of record therefore have my blessing to retitle the thread "Interstates and Digits" -- although it won't be alliterative any more! :-( SP