"high iron seats a and f, which window? Is the speed train 001 a window or a aisle?" – these panics caused by the lack of clear seating rules, are they always on the train? In fact, the answer is clear: the heart of the train seat number is "the logic of car-type decision-coding," the high-powered car looks at the alphanumeric position, the speed train looks at the back of the number by the window, and the city iron refers to the high-iron rule. This paper will explain the different types of seating codes, teach practical search techniques, and make it easy for you to find your place, regardless of the type of train。

First understand the basis: the "coding logic" of the seat number, with different models
Core composition: “vehicle number + seat code”, two key aspects of positioning
All train seating numbers consist of two parts:
(a) car number: usually from 1 to 18 (more than 8 knots or 16 knots of heavy-iron vehicles, up to 18 knots of the speed train), with visible digital markings on the side of the vehicle, prior to getting in the car, the number of the vehicle must be confirmed to avoid error
Seat code: the high iron moving vehicle is a "number + letter" (e. G. 12a), the speed train is a pure number (e. G. No. 05), the urban metro railways tend to use a high iron code or a "number + position" (e. G. 03f, 04), which directly determines the seating position。
Key clarifications: the rules for seating codes are determined by the “seat layout” of the car type, such as the 3+2 layout of high iron and the 2+2 layout of flat speed, which are completely different in logic and cannot be confused。
Layout differences: 3 main pattern, seating code
Space design varies from one vehicle to another, directly affecting the seat code:
(b) heavy iron / vehicles (g/d/c): "high-density comfort layout", organized mostly by 3+2 (second class), 2+2 (first class), 2+1 (commercial block), with an alphabetical distinction
(a) the public speed train (z/t/k/ pure numeric header): focusing on “prior load”, mostly 2+2 (hard seat), upper-middle-down (hard-down) and upper-down (soft-down) layouts, distinguishing seats/spaces by pure numbers
Town / city railways (e. G., inter-city, deep port high-level leg): most are 2+2 or 3+2 layouts, coded with reference to high-level iron, part of which will be marked with a "window-by-window" hint that is easier to identify。
Ii. Detailed sub-carrying: 3 type of car seating, read as it is
1 heavy iron / car (g/d/c headers): letters are key, depending on the window passage
The seating code for the high-iron vehicle is the clearest, letter-to-letter, and it's all right, "af against windows, cds":
Second class (3+2 layout, most common):
Encoding as " numbers + a/b/c/d/f" with a row of 5 seats such as 12a, 12b, 12c, 12d, 12f
Corresponding locations: a and f, window-by-window (visible, easy to rest), c and d, aisles (accessible, free to move), b, in the middle (both sides are manned and suitable for passengers who do not mind their position)
For example, the 10f is the 10th row window seat and the 15th row seat。
First class (2+2 layout, wider space):
Encoding as " numbers + a/c/d/f" with a row of 4 seats, with no middle b seat
Corresponds to: a and f, window by window, c and d, aisle by aisle, seat space 20% wider than second-class seats, and more comfortable。
Business seat (2+1 or 1+2 layout, high end configuration):
Encoding as " numbers + a/c/f", row 3 seats
Positions: a and f, windows, c, passages, part of the a is a stand-alone, more private。
Petty: the "accessible seat" code at both ends of the high iron car may be special (e. G. 1a, 1f may be a folding seat), but still adheres to the "af by window" principle and can be consulted。
Z/t/k/ pure numeric headers: digitally positioned, tail-numbered window
The speed train, which is not alphanumeric, is defined by numerical tail numbers and ranking patterns, and is divided into hard seats, hard-bed, and soft-bed:
Hard seat (2+2, most common layout):
The majority of the cars are 118 (non-charter owner's office space) or 112 (trainmaster's office space) with pure digital code
Window-by-window pattern: seats with tail numbers 0, 4, 5 and 9 by window (e. G. 05, 14, 19), seats with tail numbers 2, 3, 7, 8 by aisle (e. G. 02, 13, 17), and windows with tail numbers 1 and 118 (112) (the first seat at either end of the car)
Example: 10 is window-by-window seat, 16 is aisle seat, 118 is last row window-by-window seat。
Harder (up and down):
Encoding as 'number + up/ up/ down', e. G. Up 12, up 12, down 12
The bed space corresponds to a six-bed compartment with two rows of up and down, with numbers representing the partition number (1-22), the height of the bunk: the bottom bunk (accessible, fit for the elderly and the young) > the middle bunk (high, medium-priced) > the top bunk (minimum space, fit for the young)。
Worm-down (up and down):
Encoding as "number + top/ bottom", e. G. 8, 8 below
The space corresponds to 4 bunks in one compartment, 2 floors up and down, 50 per cent more wide than hard sleep, with doors that can be closed and more private, with numbers also representing the break number (1-18)。
3 city iron / city railway: cf. The high iron rule, with lots of hanja tips
Such trains have the most friendly seating codes, either following the high iron logic or directly indicating the following:
Common coding: mostly "numbers + a/b/c/d/f", rules are consistent with the high iron equivalent, af by window, cd corridor
Special tips: some of the models will mark the display screen above the seat with the words "stand to the window " , " do not occupy " , etc., and will find a location even if no code is available
For example, the long-distance train in kyoto with the seat code 12a will light a green light by the window。

Iii. Practical seating techniques: 4 methods, 1 minute precision
1. Looking for a car, then a seat: avoiding a reversal of the present
The right steps are:
(a) first step: according to the “car number” (e. G. Car 10) on the ticket, the marking of the corresponding vehicle (colored digital sign on the surface, e. G. Blue 10, yellow 10) is to be found at the train station, in line
Step 2: when you get in the car, look at the seat number signs on both sides of the car (usually under the baggage shelf) and find the corresponding rows (e. G. 12 rows) and find specific seats by code。
2. Checking markings: under the baggage shelf is a "positioning device"
A seat number sign is a key to finding one:
(a) heavy iron / vehicles: "12a, 12b, 12c" "12d, 12f" will be clearly marked on the identification plate, with the arrow pointing in the direction of the seat and searching for the arrow
(b) pedestrian: the identification plate for the hard car is marked “05, 06”, the hard / soft car is marked “up and down in the 12th compartment”, and the booth/ seat is digitally identified。
3. Tools for good use: pre-screening, more bottom-up
If you're afraid of panic in the car, you can check the seat layout with a tool in advance:
12306ap: find the corresponding ticket in "my order" and click "see the seating chart" (partly supported) to see the exact seating
Third-party tools: e. G. "trails 12306 travel" small programs, train ticket purchase pages, some of which provide seat layout maps, pre-recorded location。
4. Special circumstances: no seats found? Help trainman
Don't panic in case of special circumstances
Scenario 1: only the "no seat" ticket after the ticket is filled can be asked by the train attendant for the "no seat left open" (no ticket available for unsold seats, and someone needs to move in)
Case 2: the seat is occupied, the ticket is presented and checked, and the train operator can coordinate any dispute
Scenario 3: fuzzy coding (e. G. Damage to marking plates), tell the trainman, "the car number and seat number on the ticket, can lead you directly to the location."。
Iv. A reminder: 3 common mistakes, no more
One, one, one, one, one, one, one, one, one, two, two, two, three, one, one, one, two, one, one, two, one, one, two, one, one, one, one, one, two, one, one, one, two, one, one, one, two, one, one, one, two, two, one, one, one, one, two, one, one, one, one, one, one, one, two, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, two, two, two, one, two, one, two, one, two, one, two, one, one, two, one, one, one, two, one, two, two, two, one, one, one, one, one, one, two, one, two, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, two, one
No, no, no, no, no, no, no, no, no。
Zone 2: "all tail numbers of the speed train 0 against the window."
Not all of them. Only the hard-seat carriages (118 seats) of the “non-charter master's seat” follow the “tail no. 0/4/5/9 to the window”; the car of the stationary owner (112 seats) has the “3/4/8/9) at the end of the window, for example, if there is a stationary of the train chief, 13 is a window seat, 10 is in the aisle. This can be judged by the number of seats in the cars: 118 in the last row and 112 in the last row。
3. Misdirection 3: “no ticket can sit on a seat”
Wrong! A “no seat” without a seat means “no fixed seat” and can only sit in an unsold empty seat, and if the original owner of the seat is in the car, no passenger must step in and force the seat may cause controversy or even affect the order of the car。

Summary
The heart of the interpretation of the train seat number is "look at the car type, then look at the code": the high-wield vehicle has been marked "af by windows, cd bypass, "push hard seat by "fine 0/4/5/9, window by windows" and "sleep by hard-lided by looking for digital compartments." get in the car and then find a car and use the signboard and train attendant to help avoid the embarrassment of the wrong seat. With these skills, there's no need to panic again。




