In New Jersey, per request of Orbitc, we are implementing a strict locking policy as follows:
Fwy/MH: R5
mH: R4
PS: R2
Street and lower: unlocked.
R3 is deliberately omitted from this scale, as it is the base rank given to all AMs regardless of their editing proficiency. I’ve been using R3 for things like non-driveable segments, including railroads, or neighborhood anomalies like fire gates or seemingly-random one-way streets in neighborhoods mostly two-way, etc. All AM’s are expected to know this, or at the very least dig deeper before changing such segments when something appears wrong on the surface.
This is partially due to an overcrowding of novice editors in many areas of the state. It is also partially due to supporting Orbitc’s new mentoring program. While most of the formal mentoring is currently focused on new novice editors, R5 editors are encouraged to work with interested mid-rank editors in areas that lack locally-knowledgeable R5 oversight with the goal of becoming proficient enough for elevation to R5. (I, personally, am available to work with anyone in NY (State) or NJ, who wants in. Just say so.)
Also, many of these roads, even though they may be city surface streets, go through longer distances - the stated purpose of FC, and apparently the new purpose of Waze road types as well. Except for Freeways, we have to think of roads less in terms of their capacity, because those attributes have been moved to systems outside of the scope of WME, and instead more in terms of how far they go. Many of these roads, especially in NJ, have many intricate junctions with all kinds of nuances that we cannot expect a basic R3 AM to know very well, regardless if they are documented in detail in the Wiki or not. One innocent mistake because someone didn’t think to check some subtle attribute could easily break routing across an entire city.
We’re not trying to kick people out of being able to edit all these streets now designated as through roads. Rather, we’re saying that you need to spend some time working with us on them - call it informal mentoring, if you will - so that we can show you all the gotchas of those roads - many of which are difficult to both explain and comprehend in prose like the Wikis (and maybe even impossible if you haven’t mastered simpler things first) - before you can make changes to the map that can drastically affect the routes of trips over 5 miles long if not done correctly.
All this being said, it is tough to say the whole country needs to implement such a strict policy. There are lots of areas that need all the help they can get, and maybe even lack enough quality, advanced editors that are locally knowledgeable. It’s easy for us to say we can teach editors, but without enough editors in an area wanting to learn, there’s no one for us to teach. At the same time, it’s tough to say that the whole country needs to implement the same policy, because there are definitely areas of the country overflowing with editors, and even area managers in many cases, along with plenty of advanced editors to ensure navigation along all of the longer roads keeps flowing smoothly.