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Author Topic: Concurrency of x, x+y, x+2y  (Read 3620 times)

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Concurrency of x, x+y, x+2y
« on: October 23, 2013, 04:45:35 PM »

For example, Montreal has 10, 15, and 20.

Indianapolis has 37, 52, 67 (along with many others).

***For people that don't know what I mean***

To put it another way, this thread is looking for overlaps of three routes, in which the middle route number is exactly halfway between the lowest and highest route numbers.
« Last Edit: October 23, 2013, 09:37:57 PM by 1 »
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Re: Concurrency of x, x+y, x+2y
« Reply #1 on: October 23, 2013, 04:47:59 PM »

These number pattern threads are now getting ridiculous... 
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Re: Concurrency of x, x+y, x+2y
« Reply #2 on: October 23, 2013, 05:38:06 PM »

for x = 1, y = 0, route 1 shares its alignment with route 1 and with route 1 across all route 1s everywhere.

except that place in Tasmania.
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Re: Concurrency of x, x+y, x+2y
« Reply #3 on: October 23, 2013, 06:05:41 PM »

These number pattern threads are now getting ridiculous... 
I didn't realize we had so many frustrated algebra teachers out here.
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Re: Concurrency of x, x+y, x+2y
« Reply #4 on: October 23, 2013, 06:07:59 PM »

These number pattern threads are now getting ridiculous...

I took my "C" in junior-year high school calculus and never took another math class again. Stuff like that makes my head hurt.
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Re: Concurrency of x, x+y, x+2y
« Reply #5 on: October 23, 2013, 06:12:58 PM »

These number pattern threads are now getting ridiculous...

I took my "C" in junior-year high school calculus and never took another math class again. Stuff like that makes my head hurt.

I took a "C- / D+" in 10th and 11th grade math. I despise math. Then I made the idiot mistake of taking it again 12th grade. I passed with a 66. Didn't even care.

What is the thread even asking? When a route concurrency occurs at x (a route), then x+y (uh, what the hell is Y in this situation), then x+2y (double whatever Y was?). Ugh, this is the stuff I try to avoid on a daily basis. I'm glad the only 'complex' math I need in my job is percentages.
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Re: Concurrency of x, x+y, x+2y
« Reply #6 on: October 23, 2013, 06:19:08 PM »

What is the thread even asking?

To put it another way, this thread is looking for overlaps of three routes, in which the middle route number is exactly halfway between the lowest and highest route numbers.
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Re: Concurrency of x, x+y, x+2y
« Reply #7 on: October 23, 2013, 06:57:22 PM »

I took my "C" in junior-year high school calculus and never took another math class again. Stuff like that makes my head hurt.

Oh, I don't mind the math.  I just think number pattern threads are running dry.
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Re: Concurrency of x, x+y, x+2y
« Reply #8 on: October 24, 2013, 12:42:13 AM »

Weren't 1, 2, and 3 originally multiplexed in Boston? Or was that 1, 2A, and 3? Set A=1.

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Re: Concurrency of x, x+y, x+2y
« Reply #9 on: October 24, 2013, 09:25:47 AM »

Weren't 1, 2, and 3 originally multiplexed in Boston?
Prior to 1971; 1, 2 & 3 were indeed multiplexed along a short-stretch of all connected at Memorial Drive west of Mass Ave. at the B.U. bridge in Cambridge; but no multiplex.  The Mass Ave. bridge across the Charles River was originally MA 2.
« Last Edit: October 24, 2013, 09:53:03 AM by PHLBOS »
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Re: Concurrency of x, x+y, x+2y
« Reply #10 on: October 24, 2013, 09:41:56 AM »

Prior to 1971; 1, 2 & 3 were indeed multiplexed along a short-stretch of Memorial Drive west of Mass Ave.  The Mass Ave. bridge across the Charles River was originally MA 2.
But 3 left Mem Drive at the BU Bridge: http://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~212215~5500292:Shell-Map-of-Metropolitan-Boston-an http://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~212217~5500293:Downtown-Boston--Sightseeing-Guide- http://www.schlichtman.org/mahighways/boston52.html

Anyone have an example with y=0?
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Re: Concurrency of x, x+y, x+2y
« Reply #12 on: October 24, 2013, 10:13:47 AM »

US 23, 24, 25 once overlapped north of Toledo.

Anyone have an example with y=0?

That would certainly be noteworthy, to the extent that we'd already be aware of it.

(Hint for folks who don't like doing math: the y=0 case NE2 suggested would mean three routes with the same number overlapping.)
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