1001 Smart Cities

Permanent project revision

Digital Matatus Open Mapping Framework

Revision 2026-08-26-p1-quality-uplift · effective 2026-08-26

Superseded. A later revision exists: 2026-08-27-source-dating →

unreviewed

Created the first structured Evidence Passport with 10 claims and 6 source dossiers.

sha256:0c6306248e0173fddadfdd97bea040d991d09a0bb1c7f14f6b4afafa9ec6372a
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.
10
of 10 claims mapped
6
source dossiers
1
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-4db63e8a0812827b quantitative
rode roughly 130 matatu routes with GPS-equipped phones
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
MIT News quotes the project lead on 'the more than 130 different routes', and the project site describes students from the University of Nairobi riding matatu routes with mobile devices in hand, collecting data through a pre-selected app.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. MIT News - Digital Matatus project makes the invisible visible
  2. Digital Matatus Project (official site)
Claim 2 clm-ee57983e7aec5b68 descriptive
converted the data into a modified GTFS loose enough for a system with no calendars, no service frequencies and no operating schedules
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The project site: 'several typically required data points for the standard simply do not exist for the matatu system - data such as calendars, service frequencies and operating schedules ... we developed a modified GTFS standard that would be flexible enough for transit systems with high degrees of informality like in Nairobi.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digital Matatus Project (official site)
  2. Williams et al. 2015, Journal of Transport Geography (peer-reviewed)
Claim 3 clm-2e4fc5252736b2be quantitative
A stylised paper map followed in January 2014
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
MIT News: 'In January 2014, Digital Matatus released a stylized transport system map resembling subway maps from developed world capitals like London, New York, and Paris.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. MIT News - Digital Matatus project makes the invisible visible
Claim 4 clm-aa9a5810dcfb13fb quantitative
by August 2015 the data had been folded into Google Maps - reported as the first semi-formal system to appear there
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
MIT News, 26 August 2015: 'Open-source data from the Digital Matatus project were recently incorporated into Google Maps - the first time that transit options will be provided for a semiformal system in Google Maps.'
Caveat
The atlas previously dated the Google Maps entry to 2014; that was the paper map. The incorporation is reported as recent in August 2015, and no source read for this entry gives it a precise date.

Sources carrying this claim

  1. MIT News - Digital Matatus project makes the invisible visible
Claim 5 clm-0549c9974902dc30 quantitative
Over 5,000 downloads of the map were registered in its first six months
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
MIT News: 'The map was wildly popular, with over 5,000 downloads registered in the first six months.' The project site puts it as 'more than 5,000 unique IP addresses downloaded the data' six months after release.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. MIT News - Digital Matatus project makes the invisible visible
  2. Digital Matatus Project (official site)
Claim 6 clm-cf51034fbcacbff9 quantitative
Nairobi's technology community built five routing applications on the data, among them Ma3Route and Flashcast Sonar
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The project site: 'With new, high-quality data free and available, the technology community has developed five mobile applications that provide routing information to the public. These include Ma3route, Flashcast sonar, digitalmatatu, matatumap and more recently developed transit apps.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digital Matatus Project (official site)
Claim 7 clm-efb3ee789148f61a quantitative
In the project's own survey 86% said the map made it easier to find their way around the city and 83% said they were more likely to take a new matatu route
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The team's retrospective reports the rider survey: almost all, 86%, believed the map made it easier to find their way around the city, and about 83% reported that with the map they are more likely to take a new matatu route.
Caveat
The project's own survey of its own map, taken among students; no `find` is recorded because the source PDF's text layer drops word spacing.

Sources carrying this claim

  1. Klopp et al., Lessons from Digital Matatus in Nairobi (book chapter)
Claim 8 clm-048e05a952ba4f5f descriptive
The City of Nairobi has recognised the map, and UN-Habitat used it to plan a bus rapid transit corridor
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The project site: 'The City of Nairobi has recognized the transit map ... For example the map is currently being used by UN HABITAT to help guide the Bus Rapid Transit (BRT) they are developing for Nairobi.' The retrospective describes the same BRT corridor work in more detail.
Caveat
The project's own wording is that the city recognised the map; it is described elsewhere as the official city transit map, which no source read for this entry states.

Sources carrying this claim

  1. Digital Matatus Project (official site)
  2. Klopp et al., Lessons from Digital Matatus in Nairobi (book chapter)
Claim 9 clm-ddffd2a905e01c3b quantitative
The catalogued Digital Matatus feed still covers 2 March 2012 to 31 December 2015, was last fetched in May 2016, and the catalogue now points the entry at a different producer
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The Mobility Database record for the feed gives a service date range of 'Start Mar 2, 2012 End Dec 31, 2015', a latest dataset downloaded 'Thu May 05 2016', and the note 'This feed has been replaced with a different producer URL.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Mobility Database - Digital Matatus GTFS feed (catalogue)
Claim 10 clm-a489415038b93f84 descriptive
a GTFS loosened for a system where fares vary and routes and stops move with traffic, police checks, commuter demand and the weather
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The project site: 'In addition, fares are variable, and routes and stops can change depending on traffic patterns, police checks, commuter demands or the prevailing weather.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Digital Matatus Project (official site)

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 2026-08-26-p1-quality-uplift effective 2026-08-26 · created 2026-08-26

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

sha256:0c6306248e0173fddadfdd97bea040d991d09a0bb1c7f14f6b4afafa9ec6372a
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
10
of 10 claims mapped
6
source dossiers
1
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Digital Matatus Project (MIT, Columbia University, University of Nairobi)
Actor types
research
Funding model
grant
Funding description
Rockefeller Foundation grant
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

6 source dossiers

Digital Matatus Project (official site) digitalmatatus.com · 6 linked claims

Open original source ↗

Stable source ID
src-af044b35a4cfe32f
Publisher
Name not classified · digitalmatatus.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
2026-08-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The project's own account of the method, the modified GTFS, the download count and the applications built on the data. A standing project site with no publication date.

Descriptive only — not page/paragraph exact
Claims linked
MIT Civic Data Design Lab - Digital Matatus civicdatadesignlab.mit.edu · background

Open original source ↗

Stable source ID
src-d29dac99200786c2
Publisher
Name not classified · civicdatadesignlab.mit.edu
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The lead laboratory's project page. A standing page with no publication date.

Descriptive only — not page/paragraph exact
Claims linked
Background source; no baseline claim points here
MIT News - Digital Matatus project makes the invisible visible news.mit.edu · 4 linked claims

Open original source ↗

Stable source ID
src-edb76fac1428b626
Publisher
Name not classified · news.mit.edu
Type / language
web-page · language not classified
Published
2015-08-26
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Dates the paper map to January 2014 and reports the incorporation into Google Maps as recent at the time of writing.

Descriptive only — not page/paragraph exact
Claims linked
Williams et al. 2015, Journal of Transport Geography (peer-reviewed) doi.org · 1 linked claim

Open original source ↗

Stable source ID
src-c87c43158dc2808f
Publisher
Name not classified · doi.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
2026-08-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The peer-reviewed account of the data collection method and the modified GTFS standard. Publication date from Crossref; the publisher blocks automated reading.

Descriptive only — not page/paragraph exact
Claims linked
Klopp et al., Lessons from Digital Matatus in Nairobi (book chapter) digitalmatatus.com · 2 linked claims

Open original source ↗

Stable source ID
src-325a89732ef15bf4
Publisher
Name not classified · digitalmatatus.com
Type / language
pdf · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The project team's own retrospective, including the rider survey results and how other organisations reused the data. A PDF whose text layer does not preserve word spacing, so no locator strings are recorded against it; it states no publication date on its face.

Descriptive only — not page/paragraph exact
Claims linked
Mobility Database - Digital Matatus GTFS feed (catalogue) mobilitydatabase.org · 1 linked claim

Open original source ↗

Stable source ID
src-ed8c8fc320efa07c
Publisher
Name not classified · mobilitydatabase.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
2026-08-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The catalogue record for the feed: its service date range, when it was last fetched, and the note that it has been replaced by a different producer. A live catalogue page with no publication date.

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.