Editing Loading gauge (section)

=== Asia ===
Major trunk raillines in East Asian countries, including China, North Korea, South Korea, as well as the [[Shinkansen]] of Japan, have all adopted a loading gauge of {{cvt|3,400|mm |ftin}} maximum width and can accept the maximum height of {{cvt|4,500|mm |ftin}}.<ref name= "reh">{{Cite book |id=和書 |author= 久保田博 |script-title=ja:鉄道工学ハンドブック |pages= 148–149 |publisher= [[グランプリ出版]] |isbn= 4-87687-163-9 |date= 13 February 1997 |language= ja|author-link= 久保田博 }}</ref>
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==== China ====
The maximum height, width, and length of general Chinese rolling stock are {{cvt|4,800|mm|ftin}}, {{cvt|3,400|mm|ftin}} and {{cvt|26|m|ftin}} respectively, with an extra ''out-of-gauge'' load allowance of height and width {{cvt|5300|by|4450|mm|ftin}} with some special shape limitation, corresponding to a [[structure gauge]] of {{cvt|5500|by|4880|mm|ftin}}.<ref>National Standard GB146.1–83 Rolling stock gauge for standard gauge railways</ref> China is building numerous new railways in sub-Saharan Africa and Southeast Asia (such as in Kenya and Laos), and these are being built to "Chinese Standards". This presumably means track gauge, loading gauge, structure gauge, couplings, brakes, electrification, etc.<ref>[[Janes World Railways]]</ref>{{circular reference|date=March 2022}} An exception may be [[Double-stack rail transport|double stacking]], which has a height limit of {{cvt|5,850|mm|ftin}}. Metre gauge in China has a gauge of {{cvt|3050|mm|ftin}}.

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==== Japan, standard gauge ====
[[File:Rolling-Stock-Gauge-in-Japan.svg|left|thumb]]
Translation of legend:
* Blue: Rural railway vehicle gauge (Rural Railway Construction Rules 1919)  
* Grey: Conventional [[Cape gauge]] (3 ft 6 in track gauge) railway vehicle limits (Ordinary Railway Structure Rules 1987) 
* Figures in () are previous Cape gauge rolling stock limits (Railway Construction Rules 1900)
* Green: Shinkansen vehicle limits 

Trains on the [[Shinkansen]] network operate on {{Track gauge|1435mm|allk=on}} track and have a loading gauge of {{cvt|3,400|mm|ftin}} maximum width and {{cvt|4,500|mm|ftin}} maximum height.<ref>{{cite web |url=http://www.mlit.go.jp/pubcom/06/pubcomt129/03.pdf |script-title=ja:鉄道に関する技術上の基準を定める省令等の解釈基準 |publisher=[[Ministry of Land, Infrastructure, Transport and Tourism]] |language=ja}}</ref> This allows the operation of double-deck high-speed trains.

''Mini Shinkansen'' (former conventional {{track gauge|1067mm|lk=on|disp=or}} narrow gauge lines that have been [[Track gauge conversion|regauged]] into {{track gauge|sg|allk=on|disp=or}}) and some private railways in Japan (including some lines of the [[Tokyo subway]] and all of the [[Osaka Metro]]) also use standard gauge; however, their loading gauges are different.

The rest of Japan's system is discussed under [[#Japan, narrow gauge|narrow gauge]], below.
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==== Hong Kong ====
{{expand section|date=April 2019}}

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==== South Korea ====
The body frame may have a maximum height of {{cvt|4,500|mm|ftin}} and a maximum width of {{cvt|3,400|mm|ftin}} with additional installations allowed up to {{cvt|3,600|mm|ftin}}. That width of 3,400&nbsp;mm is only allowed above {{cvt|1250|mm|ftin}} as the common passenger platforms are built to former standard trains of {{cvt|3200|mm|ftin}} in width.

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==== Philippines ====
There is currently no uniform standard for loading gauges in the country and both loading gauges and platform heights vary by rail line.

The [[North–South Commuter Railway]] allows passenger trains with a carbody width of {{Cvt|3100|mm|ftin}} and a height of {{Cvt|4300|mm|ftin}}. Additional installations shall also be allowed up to {{Cvt|3300|mm|ftin}} at a platform height of {{Cvt|1100|mm|ftin}} where it is limited by half-height [[platform screen doors]]. Above the platform gate height of {{Cvt|1200|mm|ftin}} above the platforms, out-of-gauge installations can be further maximized to the Asian standard at {{Cvt|3400|mm|ftin}}.<ref name="ps">NSCR and SLH bid documents <!-- Uses Google Drive links --> at {{Cite web|title=Foreign Assisted Projects|url=https://ps-philgeps.gov.ph/home/index.php/bid-opportunities/foreign-assisted-projects|date=2021-04-06|access-date=2022-11-25}}</ref>

Meanwhile, the [[PNR South Long Haul]] will follow the Chinese gauge and therefore use a larger carbody width of {{Cvt|3300|mm|ftin}} from the specifications of passenger rolling stock, and a height of {{Cvt|4770|mm|ftin}} per P70-type boxcar specifications.<ref name="ps"/>