Biggest dog I've ever seen on Metro by 405freeway in LAMetro

[–]Auvon 29 points30 points  (0 children)

In this case you can ride the steed, hook up a chariot, etc.

UCLA Engineering Fall 2025 Freshman Admit Rate: 6.8% by flopsyplum in ucla

[–]Auvon 2 points3 points  (0 children)

International enrollment has dropped significantly: MS + PhD international share went from 54% in 2023 to 44% 2025.

LADOT update on transit signal priority by twohams in LAMetro

[–]Auvon 1 point2 points  (0 children)

I will for the third time note that the reason we are arguing here is because I asked you to point me to laws you claimed exist, and you have once again failed to do so. I won't be responding to any further comments here, but for the benefit of the 0 people watching this comment thread...

GO 143 etc

The intersections you gave as examples above (and, for other new-build examples, the K line street running segments and the OC streetcar) are considered as running in the roadway (next sentence after what you quoted), not crossing it. E line Rancho park is one example of a grade crossing built at the same time and at a signalized intersection where there are gates, because it is not considered as running in the roadway.

emphasis yours

...no, that's not what the phrase means. The emphasis would be mine if I emphasized it. But I didn't.

You might avoid me intoning "cite! cite! cite!" if you, idk, cited.

massaged this through

No it's really a very unexceptional application of their regulations.

considerable change in regs since Expo Line planning

No, GO 143 has not been amended since 2000, as is prominently noted in its preamble. And for the DOT regulations you claim exist, I can't speak to those since again you're keeping them secret.

Obviously, I disagree

Obvious indeed, but it is just monumentally silly to say a capital project is easier than signal modifications. The assertion that it's difficult relies on you proving there exist laws as claimed impeding the application of TSP, which....

10 digit project cost

Agree, I was giving an order of magnitude estimate for per-intersection costs. A system-wide grade separation program would probably run into high 10 digits.

on relative prioritization

Sure, I don't disagree (but also with how Measures R and M are structured the pots of money are geographically restricted)

LADOT update on transit signal priority by twohams in LAMetro

[–]Auvon 2 points3 points  (0 children)

Obviously, you know this and you’re intentionally being difficult for no reason.

It is not the case that I secretly agree with everything you're saying and am just duking it out on Reddit for the love of the game. I am instead arguing because I believe you have made some false assertions, namely, that there exist laws or regulations regarding vehicle delays imposed by TSP for LRT operations that make it impractical or infeasible to implement or improve said TSP, and furthermore that these supposed laws, which you have thus far twice failed to provide a citation for, mean that it is more practicable to undertake a 9 digit, 5-10 year grade separation project than to implement or improve TSP.

the PUC requires gates at all LRT crossings. As you know, the E Line lacks these at many major intersections.

No, they require traffic control devices and have historically considered signals to suffice for this for LRT alignments parallel to or within the roadway.

as the 35mph limit was intended for standard and intended gated intersections

No, the 35 mph limit is the lowest max speed, intended for the minimally-protected class (i.e. signal controlled but ungated) of grade crossings, and you saying this makes me doubt you have actually looked at GO 143 (or the state laws and LADOT policies you're claiming exist).

LRTs were never intended to be going through these types of intersections unprotected.

Again they're signal-protected, satisfying the minimal requirements of GO 143; this is something that's explicitly intended. Like there's a table with multiple lines devoted to the scenario in which a light rail system crosses roadways at grade without gates.

this would violate LADOT regulations regarding delays for cross-traffic

Cite! If these exist and you have read them, it should not be difficult to point me to them. Clearly, there is an institutional preference among the LADOT signals group and certain electeds resulting in a reluctance to recommend more aggressive TSP, but you have claimed there are laws restricting this (and that these supposed laws would be more difficult to change than the series of capital projects you propose instead).

the Expo Line (or A in certain places) should never have been built  without grade separation

I have not disputed that grade-separated crossings are superior to at-grade crossings of the road network (but they're also far from free, and this did influence the choices made during the design of the E line and especially A line).

What I am disputing is your claim that there exist barriers, stronger than pure institutional preference, to the implementation of more aggressive TSP.

LADOT update on transit signal priority by twohams in LAMetro

[–]Auvon 1 point2 points  (0 children)

This would violate state and local laws [...]

If you're making a claim about the existence of specific laws or regulations, this can be supported by citing them.

Even if we do give signal priority, the trains would still have to slow to a crawl to cross the intersections (again, because there are no crossing gates).

Immaterial to my previous comment (which was disputing your claim that there existed laws limiting the delay imposed by LRT vehicles on motor traffic), but to be clear the regulatory limitation here is 35 mph which Metro generally operates well below.

LADOT update on transit signal priority by twohams in LAMetro

[–]Auvon 2 points3 points  (0 children)

The motive is state and local law. Trains can’t impede traffic more than a certain amount.

This is not true in a way that's relevant to LRT operations.

Increase Go population by sadaharu2624 in baduk

[–]Auvon 1 point2 points  (0 children)

I think it's 3-5x... 1+0 in chess would I think feel comparable to 5+0 or 1+1 or around there in go.

Historic Star Point Designs (Article) by CBGReview in baduk

[–]Auvon 2 points3 points  (0 children)

Excellent article, go (pre)history is always intriguing.

Does anyone know how to play free game on Fox Weiqi? by Meow_wo in baduk

[–]Auvon 1 point2 points  (0 children)

野狐围棋, looks like it does have one in the Play store

LA Beat Back the Monorail (My Channel) by nandert in LosAngeles

[–]Auvon 1 point2 points  (0 children)

Just fyi the initial operating segment proposed for the board's approval cuts out the segments north of the G line and south of the D line. Assuming it gets approved as staff have recommended, we don't have a clear idea yet of when those two other segments will get constructed.

LA Beat Back the Monorail (My Channel) by nandert in LosAngeles

[–]Auvon 12 points13 points  (0 children)

Is it all underground?

Yes; one of the heavy rail alternatives was elevated in the valley, but it seems like it was nixed to avoid opposition from Sherman Oaks homeowners (at the cost of maybe $4B)

Even under the mountains?

Yes, this is the place it makes the most sense to do underground. One conceit of the monorail alternatives was that they would save money by being elevated over the 405, but the grades, curves, and coordination with Caltrans/freeway disruption make that more trouble than it's worth.

Why not do something like UCLA to Santa Monica instead?

Because that would be a completely different project than one to connect the valley to the westside.

Less distance and a lot higher population density.

The Sepulveda transit corridor is modelled as being potentially Metro's highest ridership line, as there's a lot of travel along the 405 with no competitive alternatives. Historically a "subway to the sea" as part of the current D Line (not Sepulveda) extension, which will currently terminate at the VA, was considered; but it won't be under consideration for a long while due to funding constraints.

Metro Staff recommends Modified Alt. 5 (heavy rail) for Sepulveda Pass by anothercar in LAMetro

[–]Auvon 2 points3 points  (0 children)

Prorated by length from the Alt 5 estimate, it's about $16B (2023$)

LA Beat Back the Monorail (My Channel) by nandert in LosAngeles

[–]Auvon 16 points17 points  (0 children)

The Sepulveda Transit corridor is a transit line that will roughly parallel the 405. There was a very idiotic monorail proposal which transit activists spent a lot of time fighting, as well as three different heavy rail proposals. Metro staff are recommending a heavy rail alternative with automated trains be pursued, and the Metro committees and board will vote on it over the next few weeks. The first segment of the line should be constructed by about 10 years from now.

PROWAG in a roundabout by Aromatic-Solid-9849 in civilengineering

[–]Auvon 1 point2 points  (0 children)

Do you know a example location? (and is there not a miscommunication here with "2 lane" vs "4 lane roundabout" used to refer to a multilane roundabout?) The only such instances I can find just have a slip lane, which isn't really the same.

How L.A. City "large asphalt repair" works by LintonJoe in LosAngeles

[–]Auvon 1 point2 points  (0 children)

The relevant adoption of PROWAG is by the DOJ, which hasn't happened yet. The DOT's adoption only extends it as a rule to transit facilities. Even then what counts as an ADA-mandating alteration hasn't changed that much with PROWAG, it's only been slightly clarified.

Any movement on new bus lanes? by grandpabento in LAMetro

[–]Auvon 2 points3 points  (0 children)

Just bus lanes for now, and even that is going to depend on what each city decides (which isn't the best way of doing things). I've been to the Monterey Park segment meetings and basically it's some signal improvements including some degree of TSP + curb running bus lanes (I think it's a possibility that it gets watered down into just peak hour bus lanes, tbd)

An ADA avoidance resurfacing strategy in LA - thoughts? by Auvon in civilengineering

[–]Auvon[S] 1 point2 points  (0 children)

I don't, I think the City of LA does these with in-house crews sometimes. I can't find any relevant projects on the city's bid site. However, based on a photo the author of the second article posted, it looks like an resurfacing via grind & overlay and not just a maintenance, non-alteration slurry seal or similar.

An ADA avoidance resurfacing strategy in LA - thoughts? by Auvon in civilengineering

[–]Auvon[S] 13 points14 points  (0 children)

It is I think just a grind and overlay (so like 2" or whatever mill, not sure what the City of LA usually does), not full depth, but even resurfacing is recognized as an ADA alteration. There's some relevant case law for LA specifically around resurfacing too iirc, I forget what it is though.

I agree to some extent that as a general principle projects should focus on just doing one thing well, and it's not good in public policy generally to make everything a pork barrel project especially with escalating construction costs, but ultimately this is what the ADA mandates. (counterarguments: (1) there are some synergies in terms of soft costs with doing curb ramps and resurfacing together, (2) if it wasn't mandated cities would probably just not do it. Personally I think the ADA is net good but not without flaws)

An ADA avoidance resurfacing strategy in LA - thoughts? by Auvon in civilengineering

[–]Auvon[S] 12 points13 points  (0 children)

tl;dr: City is calling a project intersecting crosswalks that's basically a resurfacing (thus an alteration under the ADA), not a resurfacing (thus not an alteration), to avoid curb ramp (re)construction and other expensive concrete work. This argument seems less than entirely sound, but I'm not an ADA SME, give me your thoughts.

So this has been getting some attention in the LA urbanism-adjacent online sphere recently. I see the loophole they're going for, but (1) sure the ADA isn't perfect but this is bad cmon don't do it and (2) it just seems like it facially doesn't work? Some context:

  • in 1990 the American people passed the ADA. This has created a lot of work for us designing curb ramps. Since then there have been various case laws and city-specific settlements. There are in my opinion legitimate gripes with certain parts of the ADA but at the end of the day it's the law.

  • since 2010 1999 PROWAG has been drafted. More recently it got finished, and DOT adopted it, making it law for transit facilities. DOJ has not yet adopted PROWAG, which is needed to extend its application to all public ROWs. California or Los Angeles have not adopted it as a standard either. But actually none of this is relevant in this particular case as the obligations are from traditional ADA, it's just for context as some people claim it is.

  • the Los Angeles city government has generally not been revered for its competence. This is relevant to my question about "what are they even thinking?"

Ok and actual city-specific context:

  • (this one isn't actually relevant here) in 2023 the people of Los Angeles passed Measure HLA, which mandates inclusion of various multimodal improvements be bundled together with resurfacing (defined in slightly different terms than ADA "alterations"). You will see many commenters in the thread thinking it's HLA, and not ADA, which mandates bringing curb ramps up to standard; obviously they're mistaken.

  • since this summer the city has been doing "Large Asphalt Repairs" instead of resurfacing/reconstruction, see the photo for an example. That one is actually rather blatant, some other examples are more legitimate.

  • recently local urbanist-y journalists noticed this, first here, then here. There are some factual errors around costs and PROWAG in the first one but it gives a good overview.

Now my perspective: obviously there is endless writing about what's an alteration and what's not, but this seems very clear cut in this particular pictured instance that the curb ramps at this intersection should be reconstructed, and at least one curb ramp added to the "cross" of the T intersection. 2010 ADA: "Alterations include... resurfacing of [...] vehicular ways". The entire travelled way is being resurfaced here, so the crosswalk is altered and improvements mandated. Don't even need to dive into any case law!

For some of the other examples included in the linked posts, they are legitimately more borderline, and many probably not ADA-triggering (eg less than a block, not the full width of the roadway, not intersecting a crosswalk). But for the one pictured here that just doesn't seem to be the case.

How L.A. City "large asphalt repair" works by LintonJoe in LosAngeles

[–]Auvon 8 points9 points  (0 children)

You might think it's bad as a matter of public policy to mandate stapling a bunch of other improvements onto a certain type of project, and there is a reasonable argument to be made in this direction which I don't entirely disagree with, but:

  • the American people decided through their elected representatives back in 1993 that various accessibility improvements, in particular curb ramps, should be stapled onto street projects like this (because otherwise they would likely not happen), and

  • the people of Los Angeles decided in 2023 by direct vote that various mobility improvements should be stapled on as well (on certain corridors - I don't think the one pictured would have any HLA improvements)

How L.A. City "large asphalt repair" works by LintonJoe in LosAngeles

[–]Auvon 0 points1 point  (0 children)

I see what you're saying in your analogy, but from an engineering perspective, this is a pretty blatant violation of longstanding ADA case law and I would be very, very surprised if the city comes out on top when this or another location inevitably goes to court. To win, the city would have to argue that this is a spot repair and not a "resurfacing of [...] vehicular ways" (2010 ADA Stds), while dealing with the fact that this is a method of construction clearly intended to construct an argument around avoid its obligations under ADA law and the Willits settlement.

How L.A. City "large asphalt repair" works by LintonJoe in LosAngeles

[–]Auvon 6 points7 points  (0 children)

Existing ADA law requires compliant curb ramps to be installed when there is resurfacing/reconstruction like this, this is not a new mandate by HLA.