Travel Mapping

Highway Data Discussion => Updates to Highway Data => Topic started by: the_spui_ninja on May 13, 2019, 06:47:04 pm

Title: NE: Interstate ending exit numbers
Post by: the_spui_ninja on May 13, 2019, 06:47:04 pm
I recently clinched all the Nebraska interstates, and noticed that Nebraska marks all of its Interstate termini with I-80 exit numbers (e.g. I-76's only exit in NE is 102, I-180 goes 2, 1, 401, etc.). Currently in the HB all of these just end at "I-80". Should this be updated to reflect the situation on the ground?
Title: Re: NE: Interstate ending exit numbers
Post by: rickmastfan67 on May 14, 2019, 12:48:43 am
Verified the '102' for I-76. https://goo.gl/maps/TCXc6dufioukFNxS9
Verified the '401' on I-180. https://goo.gl/maps/8LJhEuUHwXrfQKTDA

I would think we should have those exit numbers in the HB.  Seems weird though, but they are indeed posted. :-\
Title: Re: NE: Interstate ending exit numbers
Post by: the_spui_ninja on May 14, 2019, 11:24:49 am
'446' for I-680: https://goo.gl/maps/kimaQRcD37ZWVpXN8 (https://goo.gl/maps/kimaQRcD37ZWVpXN8)
'452' for I-480: https://www.google.com/maps/@41.2319541,-95.9551588,3a,75y,186.92h,96.24t/data=!3m6!1e1!3m4!1sflbvMhVEfR4TDTsF6cB7OA!2e0!7i13312!8i6656 (https://www.google.com/maps/@41.2319541,-95.9551588,3a,75y,186.92h,96.24t/data=!3m6!1e1!3m4!1sflbvMhVEfR4TDTsF6cB7OA!2e0!7i13312!8i6656) (it wouldn't shorten that one for whatever reason)
Title: Re: NE: Interstate ending exit numbers
Post by: yakra on May 16, 2019, 02:06:33 pm
I'd say these fail the "If the highway is a freeway and has a unique exit numbering system based on its own designation without the exit numbers restarting" test (http://cmap.m-plex.com/tools/manual_wayptlabels.php).
Seems we're falling down at least as far as "If there is more than one exit number sequence for a highway and no concurrent route to explain it"