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Assuming that there are no problems regarding paying for it (either you entered the system before Shabbat, or a non-Jew paid for you):

What are the halakhic issue with riding the subway on Shabbat? (I have the NYC subway in mind, but this should apply to any underground mass-transit system.)

It appears to me that the subway is most comparable to an shabbat elevator, since they're both electric, stop at all "floors," and run either automatically or not for your personal benefit. In which case, the main issues would be maris ayin and eruv, and that only applies if you're carrying.

So, to clarify:

Is the subway like a shabbat elevator, or are there other issues that would prevent one from riding it?

Is the underground network of tunnels a Reshut haYachid or Reshut haRabim, and since it's underground, would it be considered enclosed by an eruv or not?

Finally, can this be generalized to all mass-transit?

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As for your specific example, note that not all of the New York City subway is underground. –  msh210 Dec 18 '11 at 8:53
    
True. Brooklyn and the Bronx aren't. Unclear what implications that will have. –  Shmuel Dec 18 '11 at 9:03
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Parts of Brooklyn and the Bronx, right. And parts of Queens, too. Even a bit of Manhattan (the West Side IRT is elevated in northern Manhattan IIRC). –  msh210 Dec 18 '11 at 9:11
    
See: hebrewbooks.org/… –  Curiouser Dec 19 '11 at 20:19
    
Related: judaism.stackexchange.com/questions/10557/… –  Shmuel Dec 22 '11 at 6:04
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2 Answers

up vote 22 down vote accepted

I'm very sorry that I don't have time to look up the source of the old tshuvos at the moment.


There were poskim in early 20th century New York City who explored this issue, specifically in realation to the New York City subway.

Back then, the technically permissible way to ride the subway would have been:

  • Give a subway token to your friend, the non-Jew who works in your local station, on Friday.

  • Ask him to let you in (i.e. drop the coin in the mechanical turnstile) sometime on shabbos when you wanted to ride.

Going through the mechanical turnstile would be okay. The subway doesn't stop for you, it stops at every station, and there is no check-out process back then, or today, on the NYC subway.

(Whereas in San Francisco, Washington DC, and others - one is charged per stop, and must scan his ticket/card before AND after each ride)

Ultimately, the poskim in question chose NOT to publicize this discussion, for the obvious reason: people were likely to hear "riding the subway on shabbos is okay", and not take all the steps necessary - and consequently violate shabbos by carrying and by using a muktzeh subway token.


Today, there are even more problems. Using a Metrocard involves an actual melacha - using electricity, "building" a circuit, however you define the severity of turning on/off electricity on shabbos, it is a problem.

Asking a non-Jew to drop a muktzeh coin in a slot is much less problematic than asking him to slide a metrocard for you.

Then, the counter on the turnstile itself is also electronic! So, when you push through the turnstile, you are DIRECTLY "building" a circuit, and this is as much of a melacha as turning on an LED light would be.

This is all besides the point of "spirit of shabbos", "maris ayin" (What's a religious Jew doing on the subway on Saturday morning?), and other such concerns.

Bottom line: although the subway ride itself could theoretically be done without violating shabbos, there are too many factors today (and even back then) to permit it under any circumstances.


There is one circumstance where I have heard of a posek in our generation advising subway travel:

A young man in Brooklyn needed to be rushed to the hospital on a Friday morning. The Rosh Yeshiva said that someone should accompany him to the hospital.

(Having an advocate in the hospital is considered pikuach nefesh - which is why someone can get into a car with a choleh she yesh bo sakana, on shabbos)

The choleh, call him Reuven, and his chevrusa, call him Shimon, got into the ambulance. For whatever reason, they were brought to a hospital in Manhattan.

Reuven's family came to the hospital in Manhattan. They had already decided to spend shabbos in the hospital, by his side.

It was now 90 minutes before shabbos. What should Shimon do? He was no longer needed there as an advocate. Must he spend the whole shabbos in the hospital?

He called his posek, who told him that he should empty his pockets, leave his stuff with Reuven's family, take exact change for the subway fare, and get on the train that would get him closest to home.

He entered the Manhattan station BEFORE shabbos. The train returned him to Brooklyn after shabbos had already started. Again, because the NYC subway doesn't require any check-out, he simply walked off the train and walked home.

So in that very, very limited case, a shomer shabbos may ride the subway on shabbos.

Otherwise, as they say in Brooklyn....FUHGEDDABOUTIT! :-)

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Thanks! (Need 15 characters) –  Shmuel Dec 18 '11 at 8:42
    
Will, welcome to the site; I hope you stick around and enjoy it. –  msh210 Dec 18 '11 at 15:54
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Furthermore, in Boston the outbound Green line train used to be free, and at least one posek there allowed people to ride it on Shabbos in bad weather. –  Curiouser Dec 18 '11 at 20:21
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@AdamMosheh as i understand it, when you're on a ship, you're on the water. That is your t'chum. Also on water, zmanim work differently (based on your last port). Once you're on land, you can get on and off a carriage (for instance) without issue. –  Charles Koppelman Jul 31 '12 at 19:29
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@AdamMosheh according to the Star-K, your tchum actually starts at the port: "Nevertheless, if one is aboard a ship sailing at sunset on Friday and subsequently docks at a port on Shabbos, the 2,000 amos begin at the port." –  Charles Koppelman Aug 1 '12 at 12:57
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שערים המצוינים בהלכה‎ quotes a discussion regarding traveling in "קרוניות חשמליות" (city trams), and cites several potential issues. He quotes the שו״ת בית יצחק who compares it to riding an animal on Shabbos, as well as the possibility that more passengers place a larger burden on the electronic motor (not sure if this would be a problem on a subway). Another problem which he highlights is עובדין דחול - just as we find that the חכמים created the prohibition of muktzah in order to differentiate שבת from the other days of the week.

Although he quotes a dissenting opinion that permits travel in order to fulfill a מצוה, he quite strongly backs the view of the בית יצחק. [The Lubavitcher Rebbe said about the ספר שערים המצוינים בהלכה that in general it is a compilation of קולות, and when he is stringent it is solid ruling.]

Another potential issue with travelling on Shabbos is leaving the תחום שבת. This blog post elaborates on the technicalities of calculating the distance between Brooklyn and Manhattan and concludes that it is within the limits of תחום שבת.

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I wonder if there is techum underground. –  Double AA Aug 1 '12 at 2:13
    
@DoubleAA shouldn't it be "bais kmo demalya dami" –  Shmuel Brin Oct 15 '13 at 21:47
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