Submitted by Maximum-Share-2835 t3_zzzpye in washingtondc

So, I've been doing a fair amount of flying out of dca this year, and I was wondering if anyone knew why they're labeled with letters and numbers? None of the numbers repeat, so instead of e58 they could just say 58, there isn't a d58 etc. Just a thought sitting in the terminal

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empire88 t1_j2elja2 wrote

...have you looked at terminal map? It denotes where the gates are.

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Maximum-Share-2835 OP t1_j2eo9xh wrote

Yeah, but so does the number. Because that's how a map labeled with numbers/names works. Especially since they're in numerical order down the line.

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empire88 t1_j2eop33 wrote

Absolutely no pilot wants to deal with 'oh...so gate 58 is somewhere in this airport'

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Maximum-Share-2835 OP t1_j2eowaq wrote

Right, and maybe it's just me, but seeing a map that is a line where the numbers go up in order makes it pretty simple to find where 58 is.

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empire88 t1_j2eoyt3 wrote

It is just you.

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Maximum-Share-2835 OP t1_j2ep4md wrote

šŸ¤£šŸ¤£šŸ¤£šŸ¤£I'm sorry I'm bragging about my ability to count in that case

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clevertiki t1_j2ellle wrote

Itā€™s so you know what terminal to go to. Before the new security, each of the halls was its own terminal with its own security.

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Maximum-Share-2835 OP t1_j2eo3ps wrote

Ohhhhh with separate security I could see that helping people out

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elreeheeneey t1_j2evyf3 wrote

Agree with this. I've done plenty of travel in and out of DCA since moving to the area a decade ago. Old system you had to go through security for each terminal, so it was straightforward then and now to remember quickly which part of airport to get to. Particularly with terminal A having a separate entrance from B and C.

With the new security system in place the old system is moot, but having done travel knowing both guides (terminal and gate numbers) is still useful.

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chuck-san t1_j2eugzg wrote

I know what youā€™re saying - if there isnā€™t an A1, B1, and C1, then having the letter isnā€™t strictly necessary. But the letter is a convenience to get you in the right area to look for the number.

So if you were looking for gate 29, having it be a ten minute walk from gate 28 wouldnā€™t make a lot of sense. People will understand instinctively that A28 is over here, and B29 is way over there.

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Maximum-Share-2835 OP t1_j2euqkl wrote

Right, but with how simple reagan is, I feel like either the numbers can repeat easily enough, or the map does a pretty good job, as it's just counting upwards basically from one side of the airport to the other

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ropps202 t1_j2elvd5 wrote

Easier for people to find where theyā€™re going by just looking for the d concourse vs specific gates

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Initial_Run1632 t1_j2eu5r7 wrote

I can't recall ever having been to an airport where the letter/number system is not in place, except for very small airports. Maybe I'm just not remembering

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Maximum-Share-2835 OP t1_j2eudib wrote

I mean same, but most places I've seen use it as intended, the letter is upper classification, then the number is specific, so both a and b have 1 through 10 or whatever

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walkallover1991 t1_j2ff4zt wrote

Designating gates with alpha-numeric designations is best practice at airports worldwide.

The previous gate numbering system (only giving gates a number) was confusing to most travelers as it didn't designate which individual pier of the terminal the gate was located in. Adding a letter to the gate number (that corresponds to the concourse where the gate is located) makes much more sense from a wayfinding perspective.

Other airports in the US recently made similar changes within the last few years...SFO comes to mind.

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Maximum-Share-2835 OP t1_j2ffjc5 wrote

No, I get all that, my question is really about the redundancy, alpha numeric designations are partially very good because they allow for repeated usage of the numbers. So doing both seems unnecessary and I was wondering if there was a specific reason behind that

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walkallover1991 t1_j2fibl9 wrote

Probably because it's easier for everyone just to slap on letters to the existing gate numbers.

Keep in mind airport wayfinding isn't just about passengers, but ground/OPS staff and flight crews. Keeping the original numbers intact preserves a degree of familiarity.

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jtb073 t1_j2f0e38 wrote

DCA is such a small airportā€¦ itā€™s pretty difficult to not be able to find your way around.

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ApatheticAbsurdist t1_j2f56pd wrote

They donā€™t repeat numbers to avoid confusion (Donā€™t want someone saying ā€B1ā€œ and someone hearing D1 or E1).

The letter indicates where you need to go as each arm of the terminal has its own set of letters. If youā€™re familiar with the airport it helps you know whether you want to enter on the north or south security entrance (which is now more a convenience thing but used to be more of a requirement).

This is common practice at many airports. (Source: I have been on over 50 flights in the past year so I see a lot of airports).

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Maximum-Share-2835 OP t1_j2f9rpk wrote

So basically I was asking if there was a greater reason than redundancy for the sake of redundancy itself, someone else brought up the former gate specific security, which would greatly increase the cost of any error

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Maximum-Share-2835 OP t1_j2f9exx wrote

If you're familiar with the airport the number does the exact same thing, and everything is written out and also why we have a phonetic alphabet. I understand those basic "reasons" but each of them is a problem in name only or which has already been fixed capably by maps and Aviation writ large in general. This is why most airports I go to use the basic letter number system, as though it were a file system (a1, A2, b1, b2, etc)

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ApatheticAbsurdist t1_j2fjx04 wrote

I disagree with you. I fly a lot. I can know where 5 different letters are I will not know for certain if 36 is in row C or D unless I know exactly which gate of 60+ gates is in each gate house. 5 letters are much easier to memorize the locations of than 50-80 gates. I donā€™t look at the map at DCA at all. If they had numbers Iā€™d probably need to, but this system helps it so I can get from the metro to my gate in less than 10 minutes.

It speeds things up and I do not see how it harms anyone beyond trigging OCD aversion in some people.

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Maximum-Share-2835 OP t1_j2fll6e wrote

That's fine, I feel like I said that wrong and implied I was advocating specifically that, I don't get the redundancy, not that I dislike alphanumeric systems

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