My latest usaca pull request completes most of the work needed on that preview system. This included changes recommended in neroute2's thorough and helpful peer review, that I hadn't already implemented. I'll have to go back and check for any "near-miss points"/broken graph connections and broken concurrencies I might have created, as well as Datacheck errors that need to be fixed or marked as false positives. My quick read there aren't many NMPs or Datacheck errors, just some stray NMPs for preview usaush routes fallen out of synch with usaca and active CA routes, and sharp angle errors typical in mountain areas (plus unavoidable visible distance errors, that would be "washed away" when usaca is activated), though I need to prowl through Mapview to check for broken concurrencies I've missed.
All the changes made in my recent pulls are non-"newsworthy" changes that should not break any list files. But there are a few that I've held back for now:
-- route truncations (such as from relinquishments at route ends) and extensions, non-trivial but none more than a few miles long
-- routes moved onto new alignments, including the one Markkos1992 mentioned which was opened last Thursday
-- a route split needed in San Jacinto, where part of CA 79 was relinquished to local control, and there is almost no signage to help travelers follow the old route's several turns through the city to the unrelinquished parts of the route both north and south of the city (other mid-route relinquishments that don't require route splits don't have turns and/or continuation signage is better)
-- an exit number correction that couldn't be fixed with alternate labels, so whoever is using that number would need to amend their list files
We could notify affected users of these changes by one or more posts in this thread. But there's some been some frustration with that kind of notification, rather than the usual and more effective system for active systems of posting changes in Updates to Highway Data, and then in our Highway Data Updates table. Activating usaca, then quickly pulling in the changes noted above with Updates table entries, might be one approach.
Also, additional relinquishment changes might be needed to other routes, mostly in southern California, including at least CA 19, a long urban surface route that has been mostly relinquished to local maintenance, shrinking from about 27 miles to less than 4 miles. That's a moving target, and a headache I still need to work through, though I've already pulled some annoying possible route splits off my to-do list. I would be comfortable with making any additional relinquishment changes post-activation, with notice to our users through the Highway Data Updates table, etc.
