The number 12 has played a key role in human culture, showing up in places as diverse as the hours of the day, the tribes of Israel, the disciples of Christ, the jury of your peers, the major gods of Olympus, the inches in a foot, the Chinese Zodiac, the Latin Zodiac, or the egg-carton.
One reason for this is that 12 is divisible in three different ways: by 12 and 1, by 6 and 2, and by 4 and 3. Not until 18 (another significant number, in both Hinduism and Judaism) is a number again divisible in three ways. This is also the root of 13’s bad luck: it’s a prime number, divisible only by itself and one. 13 throws off 12’s groove.
Numerology and Public Transit?
As in the case of the clock, calendar, and egg-carton, 12’s divisibility could perhaps be put to practical use in public transit.
Imagine for a moment that a road were to have three different bus lanes in each direction. In one of the directions, busses on one of the lanes would make stops every 200 metres, on another lane every 400 metres, and on the third lane every 1200 metres. In the other direction, busses on one lane would make stops every 300 metres, on the second lane every 600 metres, and on the third lane every 2400.
The result of this would be that busses on all six bus lanes would arrive at the same place every 2400 metres. In addition, busses on the 200 metre and 400 metre lanes would arrive at the same place every 400 metres, and busses on the 200,300, and 600 metre lanes would all arrive at the same place every 600 metres. Five of the six lanes — the 200, 300, 400, 600, and 1200 — would all arrive at the same place every 1200 metres. Lots of opportunities for passengers to transfer easily from one lane to another might therefore be created by such a transit system. Ideally, this would make the system both efficient and useful.
Of course, you’ve probably already spotted the problem with this plan: roads aren’t wide enough for six transit lanes!
In order to have a transit-by-the-dozen plan like this, you would need either narrower vehicles or wider roads.
In the case of wider roads, the solution is obvious: use highways. The challenge then, however, would be how to get the passengers to and from those highways. This may not be viable today — or at least, not politically viable — but it could perhaps become so with the advent of autonomous or semi-autonomous cars. Autonomous vehicles could take passengers to and from transit stops located in or adjacent to the highways.
The same might be said of narrower vehicles. Narrow, one-seater autonomous or semi-autonomous cars might allow main streets to create six narrow lanes — three in each direction — to be used for a transit system. Not only would the vehicles themselves be narrow, but they may also require less space between lanes.
But, if anywhere, it is probably on highways, not ordinary roads, where such a plan might actually have potential. Highways are so wide that, rather than have six transit lanes in total, it could be possible to have twelve: a 200, 300, 400, 600, 1200, and 2400 in each direction. You could even name the lanes after the Zodiac. You could then give a tourist directions like “take the Taurus for three stops, then swich to the Gemini.”
Alternatively, you could use only one lane in each direction, but still have different busses using the lanes stop 200,300, 400, 600, 1200, or 2400 metres apart. This would make the system possible on normal roads, with normal sized vehicles, rather than only on wide highways or with narrow autonomous cars.
This is all enormously speculative of course. I don’t expect to see it happen, and am not sure it would even be desirable.
I guess we’ll have to consult an astrologer to find out.