1001 Smart Cities

Permanent project revision

Yanfang Line: Driverless Metro on Home-Grown Signalling

Revision 2026-08-28-baseline · effective 2026-07-26

Current revision. This is the snapshot used by the live entity page.

unreviewed

Created the first structured Evidence Passport with 11 claims and 6 source dossiers.

sha256:099883fb71f569b1d0eb7e6205b7f2d6b92b4261aac5f8da1d732e592002917b
All revisions → Current entity page →

Change set

  • add /evidencePassport — Added claim-level evidence mapping and source dossiers.
  • add /revisionHistory — Established a permanent, hash-addressed baseline revision.
11
of 11 claims mapped
6
source dossiers
4
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Claims, one by one

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-446e55bc96c98cc7 quantitative
The 14.4 km Yanfang line opened on 30 December 2017 in Beijing's southwestern Fangshan district
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
China Daily, relaying Xinhua and the operator: launched 30 December 2017, nine stations on a 14.4 km main line linking Yanshan and Fangshan. CGTN, reporting from the opening, gives the same nine stations and 14.4 kilometres. Wikipedia records the same opening date.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. China Daily — Beijing subway line goes fully automated (20 Dec 2019)
  2. CGTN — A deeper look at China's first domestically developed automated subway
  3. Wikipedia — Yanfang line
Claim 2 clm-129029c250366a29 descriptive
state media and the operator describe it as China's first fully automated metro built entirely from domestic subsystems, its automatic train control coming from Beijing's Traffic Control Technology rather than an imported CBTC
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
China Daily calls it China's first fully domestically developed automated subway. CGTN reports that everything from rolling stock to signal communication systems, CCTV and rail tracks is domestically produced, and quotes the automation project director at Beijing Traffic Control Technology on the signal system being built for Chinese operating habits rather than imported. Traffic Control Technology names itself as the contractor.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. China Daily — Beijing subway line goes fully automated (20 Dec 2019)
  2. CGTN — A deeper look at China's first domestically developed automated subway
  3. Traffic Control Technology — company news (supplier)
Claim 3 clm-d0ba7369976466fa quantitative
Trains initially ran at GoA3 with an attendant on board whose job was to supervise rather than drive; the line switched to unattended GoA4 operation in December 2019, after 195 tests of the automatic system
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
CGTN at the opening: the operator said the line was designed to the GoA3 standard and there would still be an attendant on board, whose role is merely to supervise and not to operate. China Daily, December 2019: the line was upgraded from GoA3 to GoA4, meaning unattended train operation, after the company ran 195 tests on the automatic system.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. CGTN — A deeper look at China's first domestically developed automated subway
  2. China Daily — Beijing subway line goes fully automated (20 Dec 2019)
Claim 4 clm-1292176165f7df33 quantitative
The same home-grown system was then scaled up to the 160 km/h Daxing Airport Express, which has run unattended since June 2021
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The Beijing Municipal Government: on 28 June 2021 the Daxing Airport Express put its unmanned train into operation, becoming the first fully automatic rail line in China with a design speed of 160 km/h operating at GoA4, using a Full Automatic Operation system with fully independent intellectual property rights. Traffic Control Technology states its fully automatic operation system was applied to the Daxing airport line at 160 km/h.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Beijing Municipal Government — Daxing Airport Express achieves fully automated operation
  2. Traffic Control Technology — company news (supplier)
Claim 5 clm-ceec9332381753ba quantitative
Two years after opening, the operator counted nearly 13.2 million trips on the line, and the planned branch line has been left unbuilt because of low passenger flow
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
China Daily, December 2019: nearly 13.2 million trips have been made on the line over the years. Wikipedia records that the 6.1 km branch line from Raolefu to Zhoukoudian Town remains under planning and will not be built in the short term because of low passenger flow.
Caveat
The ridership total is the operator's own, relayed by state media; no independent count has been published.

Sources carrying this claim

  1. China Daily — Beijing subway line goes fully automated (20 Dec 2019)
  2. Wikipedia — Yanfang line
Claim 6 clm-5d2a747c69d16e57 quantitative
Chinese state media reported in January 2025 that 50 fully automated metro lines were running in 21 Chinese cities, about 1,480 km in total, in an article tracing the wave back to Yanfang's 2017 opening
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Global Times, 6 January 2025: since the launch of China's first domestically developed fully automated metro line in 2017, Beijing's Yanfang line, 50 fully automated running lines have been opened and operated in 21 cities, with an operating mileage of about 1,480 kilometres.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Global Times — China issues trial code of practice for fully automated urban rail systems (6 Jan 2025)
Claim 7 clm-82066d8dd636d934 descriptive
The same article records why the transport ministry had just issued a trial code of practice for these systems: recent incidents had revealed weaknesses in cross-discipline coordination and safety management
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Global Times: the Ministry of Transport released the trial code of practice for fully automated urban railway transportation systems, and recent incidents have revealed weaknesses in cross-discipline coordination and safety management, highlighting the need for clearer technical standards and stronger safety measures, according to the ministry.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Global Times — China issues trial code of practice for fully automated urban rail systems (6 Jan 2025)
Claim 8 clm-7eadb5825cca0115 quantitative
Traffic Control Technology's corporate account has the 2017 demonstration project opening at GoA4
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The supplier's own page: in 2017 the demonstration project of the Beijing Yanfang line, undertaken by Traffic Control Technology, was opened, and the fully automatic operation level reached the GoA4 level.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Traffic Control Technology — company news (supplier)
Claim 9 clm-9fdb8b9d213c1b47 quantitative
At the opening the operator told reporters the line was designed to the GoA3 standard and that an attendant would ride to supervise rather than drive — and the company's own project director said the upgrade to GoA4 would come when passengers had grown accustomed to it
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
CGTN, reporting from the 30 December 2017 opening: the subway operator said the line was designed by the GoA3 standard; there will still be an attendant on board whose role will merely be to supervise, and not to operate; and Mao Xinde, automation operation system project director at Beijing Traffic Control Technology, said that when passengers become more accustomed to this, they will upgrade it to GoA4.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. CGTN — A deeper look at China's first domestically developed automated subway
Claim 10 clm-fa5066c7722b8dcb quantitative
It came in December 2019, after 195 tests
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
China Daily, 20 December 2019: the operator said the line had gone fully automated, upgraded from GoA3 to GoA4, after 195 tests of the automatic system.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. China Daily — Beijing subway line goes fully automated (20 Dec 2019)
Claim 11 clm-944e6df75268422e quantitative
In January 2025 the transport ministry issued a trial code of practice for fully automated lines because incidents had revealed weak cross-discipline coordination and safety management, and set requirements for lines already running automatically that do not meet it
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Global Times, 6 January 2025: the Ministry of Transport released the trial code of practice for fully automated urban railway transportation systems; recent incidents had revealed weaknesses in cross-discipline coordination and safety management; and the code sets requirements for existing fully automated lines and those upgraded from non-automated systems that do not meet it.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Global Times — China issues trial code of practice for fully automated urban rail systems (6 Jan 2025)

Source dossiers and revision state

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-08-28-baseline effective 2026-07-26 · created 2026-08-27

Awaiting operator and domain-expert review; publication of this revision implies neither.

Erratum on this revision's envelope. The snapshot, its hash and its permanent link are untouched.

  • createdAt previously read 2026-08-28T02:10:00Z. The batching script that produced this revision advanced createdAt into the future to satisfy the strictly-increasing order the validator requires per entity. The value never recorded a real event; the corrected value is the moment the revision provably existed in the repository. Corrected to 2026-08-27T00:31:45Z on 2026-08-27; evidence: first appears in commit 91dea370c5, committed 2026-08-27T00:31:45Z.
sha256:099883fb71f569b1d0eb7e6205b7f2d6b92b4261aac5f8da1d732e592002917b
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
11
of 11 claims mapped
6
source dossiers
4
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Beijing Metro Operation Administration Corp., Ltd.
Actor types
utility
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

6 source dossiers

China Daily — Beijing subway line goes fully automated (20 Dec 2019) chinadaily.com.cn · 5 linked claims

Open original source ↗

Stable source ID
src-870f681741ac4207
Publisher
Name not classified · chinadaily.com.cn
Type / language
web-page · language not classified
Published
2019-12-20
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

State press: the Yanfang line upgraded from GoA3 to GoA4 in December 2019 after 195 tests; describes it as China's first fully domestically developed automated subway, opened 30 December 2017, 14.4 km and nine stations.

Descriptive only — not page/paragraph exact
Claims linked
CGTN — A deeper look at China's first domestically developed automated subway news.cgtn.com · 4 linked claims

Open original source ↗

Stable source ID
src-c5b6d986cba72aec
Publisher
Name not classified · news.cgtn.com
Type / language
web-page · language not classified
Published
2017-12-31
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Confirms the line opened at GoA3 with an attendant on board who does not drive; everything from rolling stock to signalling domestically produced; names Mao Xinde of Beijing Traffic Control Technology as head of the automation project.

Descriptive only — not page/paragraph exact
Claims linked
Wikipedia — Yanfang line en.wikipedia.org · 2 linked claims

Open original source ↗

Stable source ID
src-a922d9e5203069e1
Publisher
Name not classified · en.wikipedia.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Supporting reference: 14.4 km, nine stations, opened 30 December 2017; the first line in Beijing capable of unattended train operation and the first in China to use only domestically developed subsystems; the planned branch line is deferred for low passenger flow. A living article with no publication date.

Descriptive only — not page/paragraph exact
Claims linked
Traffic Control Technology — company news (supplier) en.bj-tct.com · 3 linked claims

Open original source ↗

Stable source ID
src-18702664317eaf84
Publisher
Name not classified · en.bj-tct.com
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The supplier's own account, a reprint of a China Business News interview, of the Yanfang line as its first fully automatic operation demonstration line. It states the line 'reached the GoA4 level' at its 2017 opening, which the reporting from the opening and the 2019 upgrade announcement contradict; the page carries no reliable publication date.

Descriptive only — not page/paragraph exact
Claims linked
Beijing Municipal Government — Daxing Airport Express achieves fully automated operation english.beijing.gov.cn · 1 linked claim

Open original source ↗

Stable source ID
src-9730ae0141bddbb2
Publisher
Name not classified · english.beijing.gov.cn
Type / language
web-page · language not classified
Published
2021-06-30
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Official confirmation that the Daxing Airport Express reached GoA4 unattended operation on 28 June 2021 using a system with fully independent intellectual property rights, at a 160 km/h design speed.

Descriptive only — not page/paragraph exact
Claims linked
Global Times — China issues trial code of practice for fully automated urban rail systems (6 Jan 2025) globaltimes.cn · 3 linked claims

Open original source ↗

Stable source ID
src-3d80fe61b1966e45
Publisher
Name not classified · globaltimes.cn
Type / language
web-page · language not classified
Published
2025-01-06
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Source of the diffusion figure: 50 fully automated lines running in 21 cities, about 1,480 km in total, in an article tracing the wave to Beijing's 2017 Yanfang line.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this passport
  • Publisher names and source languages have not yet been classified; domains are recorded without guessing.
  • Existing source notes are descriptive locators, not page- or paragraph-exact citations.
  • A missing archive, publication date or content hash is shown as null rather than inferred.
  • The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.