洛杉矶地铁拥有全球最慢的几部自动扶梯。
LA Metro has some of the slowest escalators on Earth

原始链接: https://basin.la/articles/ninety-feet-a-minute.html

与香港或新加坡等全球交通枢纽相比,洛杉矶地铁(LA Metro)的自动扶梯速度明显缓慢。许多国际城市的自动扶梯运行速度为每秒 0.75 米,而洛杉矶地铁的设计规范仅为每分钟 90 英尺(约合每秒 0.46 米)。 这种迟缓的节奏显著增加了出行时间。一项针对洛杉矶 27 个地下车站的模拟显示,如果该系统的扶梯速度能达到香港的水平,通勤者每年总共可节省约 67 万小时。 这种差距源于美国严格的安全规范,该规范将自动扶梯速度限制在每分钟 100 英尺以内,而加州也针对新安装设备采取了这一上限。即便如此,洛杉矶地铁目前的运行速度仍慢于洛杉矶国际机场(LAX)等本地同行,后者已充分利用了每分钟 100 英尺的速度上限。有趣的是,历史档案显示,洛杉矶 1984 年最初的地铁规划要求自动扶梯达到每分钟 120 英尺,但这一设计要求后来被废除。尽管提高速度会带来维护、设备承载能力以及潜在震动增加等挑战,但目前的缓慢运行凸显了洛杉矶交通基础设施与全球其他地区更快捷、更高效标准之间的巨大反差。

Hacker News 最新 | 往期 | 评论 | 提问 | 展示 | 招聘 | 提交 登录 洛杉矶地铁拥有地球上最慢的一些自动扶梯 ( basin.la ) 7 点 由 big_toast 2 小时前 | 隐藏 | 往期 | 收藏 | 2 条评论 帮助 Neywiny 3 分钟前 | 下一条 [–] 我曾多次乘坐位于惠顿地铁站(Wheaton Metro)的东半球最长自动扶梯,据维基百科显示,它们的速度显然是一样的。所以我之前觉得是因为扶梯短才设得这么慢的直觉是不成立的。 回复 big_toast 2 小时前 | 上一条 [–] 洛杉矶:0.46 米/秒(1 英里/小时) 香港:0.75 米/秒(1.7 英里/小时) 基辅:0.9 米/秒(2 英里/小时) 总的来说比我预想的要慢一些。我想速度主要是由上下扶梯的安全考量决定的。 回复 社区准则 | 常见问题 | 列表 | API | 安全 | 法律 | 申请 YC | 联系方式 搜索:
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原文

If you’ve ridden an escalator in Hong Kong or Singapore, the climb out of an LA Metro station can feel painfully slow. It’s really not just Metro though, American transit escalators generally operate under a much lower speed limit than those in much of the world.

Why? Well honestly we don’t have the whole answer, but we did look at the rules governing escalators in 139 cities across 58 countries and came to some interesting conclusions. One of them is that LA Metro’s specified speed is below the maximum allowed in every single city on our list.

That doesn’t mean we measured 139 cities’ escalators. We compared their legal limits, which tell us how fast they’re allowed to go, and then looked separately at operating speeds where we could find them.

Escalator operating speeds, 42 cities

0.75 and up0.65About 0.5Slower than LALA Metro

Source: Basin Data. The speed each system's escalators typically run at, in meters a second, from operator documents, a national registry, engineering papers and operators quoted in the press, each checked against its source. LA Metro's dot is the 90 feet a minute its design specifications call for.

Hong Kong has some of the fastest escalators in the world, with most MTR station escalators moving people around at 0.75 meters per second, about 148 feet a minute. Next to LA’s specified 90 feet a minute, that’s about a 64% faster pace.

How fast the escalators run

0.425 citiesBusanDaeguDaejeonGwangjuIncheon0.462 citiesLos AngelesNew York0.511 citiesBerlinBuenos AiresHamburgMunichPhiladelphiaSan FranciscoSeoulTaipeiTokyoWarsawWashington0.6516 citiesDubaiGuangzhouHangzhouHelsinkiMadridNanjingParisPragueSao PauloShanghaiShenzhenStockholmSydneyViennaWuhanXi'an0.757 citiesHong KongKharkivLondonMinskMoscowSaint PetersburgSingapore0.91 cityKyiv

Source: Basin Data. Typical operating speed in meters a second; 0.46 is LA Metro's specified 90 feet a minute and 0.5 is about 100.

For a climb the height of Civic Center/Grand Park’s platform-to-street ascent, that specified speed works out to about 87 seconds standing on an escalator in LA. A trip of the same length at Hong Kong’s usual speed would take about 53.

Civic Center’s Escalator Climb after 53 seconds

STREETPLATFORM65 ftHong Kong, 148 ft/minat the streetMetro 1984, 120 ft/min12 s to goUS limit, 100 ft/min25 s to goLA Metro, 90 ft/min34 s to go
Source: Metro's 1983 station drawing for Civic Center/Grand Park, street to platform about 65 feet, drawn to scale as one 30-degree escalator. Riders standing still, with LA Metro at its specified 90 feet a minute.

So if we could suddenly make LA’s escalators that fast, how much time would people actually get back?

Crowded escalators at Central station on Hong Kong's MTR
Central station on Hong Kong’s MTR. Photo: MiGAIS MinFengau, CC0 via Wikimedia Commons

Metro counts 115 stations and says it has 171 station escalators, but for this calculation we focused on the 27 underground stations. Using FY2026 station ridership figures circulated from a public-records response, we arrive at about 300,000 minutes of escalator riding on an average weekday, or about 1.7 million hours a year.

Modeled weekday escalator minutes

Union StationCivic Center7th St/Metro CenterNorth Hollywood10,00050,000 minutes
Source: LA Metro FY2026 average weekday boardings (public-records response); Basin model. The 27 underground stations, every rider taking the escalator in and out, standing, at Civic Center's depth and Metro's specified 90 feet a minute. Union Station also counts riders on its street-level platforms, and changes between lines inflate 7th St/Metro Center.

There are some pretty big assumptions here. We treated every underground station as roughly as deep as Civic Center, ran every escalator at Metro’s specified 90 feet a minute and assumed everyone takes the escalator, standing still, both in and out. People obviously also walk, take the stairs or use elevators. Transfers complicate the ridership figures, and we left elevated stations out entirely, so this is a rough model rather than an actual count of everyone’s time.

But under those assumptions, matching Hong Kong’s usual speed would save about 119,000 minutes every weekday, or about 670,000 hours a year. For someone commuting between two underground stations every workday, the modeled saving is about 9.5 hours annually.

The problem is we can’t just turn them up.

Escalator operators choose their speeds within limits set by safety codes. Most of the cities we examined follow one of two main standards, or a national version of them. The European standard allows 0.75 meters per second at inclines up to 30 degrees. The American standard caps escalators at 100 feet a minute, about 0.508 meters per second. California uses that 100-foot limit for new installations and speed alterations.

Metro’s specified 90 is another 10% below that. LAX, meanwhile, specifies the full 100 feet a minute, so even within Los Angeles we have an airport escalator specification that’s 11% faster than the subway’s.

Getting Metro to that American maximum would save 10% of the riding time in our model, about 30,000 minutes each weekday.

What would it cost? We don’t have a reliable price for making that change across Metro’s system. Matching Hong Kong would be a bigger project still, involving both the code limit and whether the equipment could accommodate the higher speed.

And faster isn’t automatically better for every rider. Singapore’s transit engineers measured nearly twice as much step vibration at 0.75 meters per second as at 0.5. Their escalators use the faster setting during rush hour and the slower one off-peak.

Riders on the long escalators down into Bras Basah station on Singapore's MRT
Bras Basah station, Singapore. Photo: Katmorro, CC BY-SA 3.0 via Wikimedia Commons

Speed also has very real safety stakes, and that’s where our next dive into escalators is headed.

Still, the strangest thing we found was in LA’s own archives.

The original subway design rules required escalators capable of running at both 90 and 120 feet a minute. At 120, that Civic Center climb would take about 66 seconds instead of 87.

Source: SCRTD Metro Rail System Design Criteria and Standards, Vol. III, sec. 23.6.1.C, Revision 2, 1984; Metro Rail Design Criteria, sec. 6.14.6, Revision 9, 2015.

We don’t know whether the installed escalators ever actually ran at 120, or when and why that requirement disappeared. The American code lowered its maximum from 125 to 100 in 2000, but we haven’t established a connection between that change and Metro’s decision.

What we do know is that LA’s original subway planners required a faster option. Somewhere between those plans and the later rulebook, we lost it.

CORRECTION, 2026-09-24. An earlier version said LA Metro’s escalators go 90 feet per minute. That’s the speed Metro’s design specifications call for, and the piece now says so. A reader measured two of Metro’s newer Schindler escalators at 98.4 feet per minute, just under the American maximum, so at least some of the system runs faster than its own specification. We’re asking Metro how its escalators are set.

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