1001 Smart Cities
🇵🇱 Warsaw

Warsaw's Integrated Traffic Management System (ZSZR)

🤖 AI-generated summary · ◆ 27 sourced claims · 🔎 Last verified

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

27 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.

How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page

Warsaw's adaptive traffic lights opened in 2008 at 37 junctions instead of the 158 planned. They now cover 479, and a tram gets a few extra seconds of green, weighed against its delay.

Outcome🔄 Ongoing
Evidence📊 Independent
what does this mean?The strongest source is an independent non-academic evaluation: an audit office, a government or EU review, or an NGO. It grades who did the looking — not how well the project went. All four grades →
Run byZarząd Dróg Miejskich (ZDM), the City of Warsaw's road authority, with a contracted system operator (Siemens 2017–2025, Yunex 2026–2031)
Scale🏙️ City-wide
Funding14.2 million złoty from the European Regional Development Fund (Integrated Regional Operational Programme, granted 2005) for the first stage; operation and expansion from the city budget through operator contracts: Siemens 2017–2025, nearly 124.5 million złoty gross; Yunex 2026–2031, more than 223.5 million złoty. A second EU-co-funded stage studied for 2011–2014 was not financed.

Part of 1001 Smart Cities — 1,216 documented projects · 🏙️ 8 more in Warsaw · 🚦 Traffic management guide · 🚲 Mobility projects

Warsaw's Integrated Traffic Management System (Zintegrowany System Zarządzania Ruchem, ZSZR) is the road authority ZDM's network of traffic signals, detectors, cameras, variable message signs and a control centre. Built by Siemens with 14.2 million złoty from the EU's regional development fund, it was switched on in autumn 2008 at 37 junctions, with the stated aims of giving public transport priority and informing road users. Across much of the network an adaptive algorithm, Sitraffic MOTION, generates candidate signal programmes every 3 minutes from detector data and changes programmes every 5–15 minutes. Priority uses the GPS positions of trams and buses: a controller can lengthen a green by a few seconds, weighing dwell time at the stop and delay against the timetable. In December 2025 ZDM signed a six-year operating contract with Yunex, the only bidder, for more than 223.5 million złoty, covering 479 junctions.

Live 📅 since 2008

📊 Impact

The first stage fell short of its own plan. NIK, the Supreme Audit Office, found in 2009 that the system covered 37 junctions although the funding application had foreseen 158, because bids for the second and third areas far exceeded ZDM's budget; it also found that bringing pl. Zawiszy into the system had not removed the congestion there. A second stage, studied in 2010 for 2011–2014, got no funding in the city's budget in August 2012 and was not being carried out when NIK checked in 2013. Growth came instead through the operator contracts: 70 junctions in February 2016, 268 in August 2018 and 411 locations, signalised pedestrian crossings included, in 2023. ZDM estimates that 10 to 20 per cent more cars pass the connected junctions per day than before, without publishing a method. In 2011 the transport campaign group Zielone Mazowsze told the mayor that Warsaw's tram priority was conditional, granted only to late trams and only where car capacity allowed, and that on Al. Jerozolimskie it had not shortened scheduled tram times.

🎓 Lesson

An adaptive signal system is bought once and then grown for decades, and the contract that grows it decides what it optimises. Warsaw's first stage delivered one of three planned areas; the network then expanded through operator contracts that fix how many junctions to add each year, five under the 2017 contract and about 20 under the 2025 one, while the result ZDM reports is cars per day. Tram priority exists, but as a few extra seconds of green weighed against delay rather than a right of way, which is what campaigners asked for in 2011.

🚲 MobilityTraffic managementPublic transportSensors & IoT

Sources

↗ NIK (Supreme Audit Office) — post-audit statement to the director of ZDM, P/09/178 (6 Nov 2009)The auditor's findings at the road authority for 2004–mid-2009: ZDM launched the ZSZR in 2008 at 37 junctions while the funding application foresaw 158; only one of three planned areas was built because bids for the other two far exceeded the money ZDM could commit; the control centre could integrate 200 junctions but the next stage was scheduled only for 2012; including pl. Zawiszy in the ZSZR had not eliminated congestion there. Cites the EU co-funding agreement of 11 April 2006.
↗ NIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw, LWA-410-20-01/2009 (8 Dec 2009)The auditor's consolidated statement to the mayor (consolidated text): strategic transport goals not achieved; the ZSZR started only in 2008, covering 37 junctions against 158 planned; after the audit the city's multi-year investment plan halted or limited ZSZR stage II among other projects.
↗ NIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw on traffic organisation, P/13/078 (18 Oct 2013)Audit of the city as traffic authority, 2011–2013: stage I of the ZSZR was completed in 2008; a feasibility study with cost-benefit analysis for 2011–2014 was prepared in 2010; at the council session of 30 August 2012 the project received no financing because of the city's financial situation and was not being implemented by the end of the audit.
↗ ZDM Warszawa — 100 mln z UE na projekty ZDM (2 May 2019)ZDM's account of its EU-funded projects: the ZSZR was its first, built from scratch with 14.2 million złoty granted in 2005 from the ERDF under the Integrated Regional Operational Programme; it started three years later with subsystems for signal control, variable-message information, weather, tunnel control, public transport priority and data archiving; 37 junctions in 2008, 321 at the time of writing, 53 added in 2018.
↗ ZDM Warszawa — Dziesiątki skrzyżowań, kamery, pomiar ruchu (11 Feb 2016)Operator description: 70 signalised junctions, 60 cameras, 16 traffic measurement stations, 5 variable message signs, tram priority control in Al. Jerozolimskie and the Wisłostrada tunnel; inductive loops and infrared detectors feed the control centre; 29 junctions added in 2014–2015.
Show 8 more sourcesShow fewer
↗ ZDM Warszawa — Nowy operator Zintegrowanego Systemu Zarządzania Ruchem (2 Oct 2017)Siemens chosen as operator for 2017–2025, contract value nearly 124.5 million złoty gross; obligation to add 5 junctions a year (40 over 8 years); modernisation of the SCALA system and the control centre; at the time 97 junctions.
↗ ZDM Warszawa — „Zielona fala” coraz dłuższa (8 Aug 2018)Rebuilt control centre opened; the ZSZR covers 268 junctions; a further 40 junctions to join the 'green wave'.
↗ ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)ZSZR running since autumn 2008, created to control traffic, give priority to public transport and inform road users; grew eleven-fold to 411 locations, including signalised pedestrian crossings; ZDM estimates 10–20% more cars a day through connected junctions; describes the Sitraffic MOTION algorithm (programmes generated every 3 minutes, changed every 5–15 minutes).
↗ ZDM Warszawa — Inteligentniejszy, większy, nowocześniejszy. Taki będzie Zintegrowany System Zarządzania Ruchem (8 Oct 2025)Tender for the 2026–2031 operator: one bid, from Yunex, over 223.5 million złoty; the system has 450 junctions; a digital twin and AI analytics are listed as possible functions the operator will propose and ZDM will test.
↗ ZDM Warszawa — Nowocześniejszy system zarządzania ruchem – pomoże komunikacji i kierowcom (3 Dec 2025)Contract signed with Yunex for six years, offer over 223.5 million złoty, managing 479 junctions; components include signal control, a public transport priority system exchanging data between controllers and trams on the basis of GPS position, 240 cameras, 16 measurement stations and variable message signs; about 20 junctions to be added per year; AI and a digital twin framed as a strategy the operator is to develop.
↗ ZDM Warszawa — Sygnalizacja – coś więcej niż światła (12 Aug 2026)How priority works: controllers receive bus and tram locations and take dwell time and delay against the timetable into account, and can extend green by a few seconds; the ZSZR has over 400 junctions and crossings; new operator contract for 2026–2031.
↗ Super Express — Bubel za 30 mln powoduje korki (5 Sep 2008)Tabloid report from the first weeks: congestion persists or worsens where the ZSZR was installed; ZDM says 35 junctions are covered; a Siemens director says the company built the system and that calibration runs through September, with public transport given priority.
↗ Zielone Mazowsze — letter to the Mayor of Warsaw on tram priority in traffic signals, TRP-10-005-01 (30 Jun 2011)Letter from the transport campaign group: Warsaw's traffic engineer allowed only conditional priority, given to trams late against the timetable and without reducing car capacity; the group calls this a disguised way of not granting priority, says the priority on Al. Jerozolimskie failed, and asks for unconditional priority and green waves for trams.

📅 How old is the evidence?

Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: since 2008. 13 of 13 sources carry a publication date, from 5 September 2008 to 12 August 2026.

When the sources were published

  1. Super Express · pressSuper Express — Bubel za 30 mln powoduje korki (5 Sep 2008)
  2. Najwyższa Izba Kontroli (NIK) · oversight bodyNIK (Supreme Audit Office) — post-audit statement to the director of ZDM, P/09/178 (6 Nov 2009)
  3. Najwyższa Izba Kontroli (NIK) · oversight bodyNIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw, LWA-410-20-01/2009 (8 Dec 2009)
  4. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZielone Mazowsze — letter to the Mayor of Warsaw on tram priority in traffic signals, TRP-10-005-01 (30 Jun 2011)
  5. Najwyższa Izba Kontroli (NIK) · oversight bodyNIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw on traffic organisation, P/13/078 (18 Oct 2013)
  6. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — Dziesiątki skrzyżowań, kamery, pomiar ruchu (11 Feb 2016)
  7. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — Nowy operator Zintegrowanego Systemu Zarządzania Ruchem (2 Oct 2017)
  8. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — „Zielona fala” coraz dłuższa (8 Aug 2018)
Show 5 more dated sourcesShow fewer
  1. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — 100 mln z UE na projekty ZDM (2 May 2019)
  2. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)
  3. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — Inteligentniejszy, większy, nowocześniejszy. Taki będzie Zintegrowany System Zarządzania Ruchem (8 Oct 2025)
  4. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — Nowocześniejszy system zarządzania ruchem – pomoże komunikacji i kierowcom (3 Dec 2025)
  5. Zarząd Dróg Miejskich w Warszawie (ZDM) · city governmentZDM Warszawa — Sygnalizacja – coś więcej niż światła (12 Aug 2026)

Every source, with links ↑

What happened to this record

  1. Entered the record
  2. Sources last read

Every revision, permanent →

Show your work What this page rests on and what it can’t tell you · all 27 claims with their sources · the forensic record

Evidence file · public beta 27 addressable claims, 13 source dossiers, one permanent baseline. The file is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.

Inspect the claims, one by one — verbatim text, sources and caveats for all 27

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-4eb049bd0ab2a28d descriptive
Warsaw's Integrated Traffic Management System (Zintegrowany System Zarządzania Ruchem, ZSZR) is the road authority ZDM's network of traffic signals, detectors, cameras, variable message signs and a control centre
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM describes the system it manages as signalised junctions, monitoring cameras, traffic measurement stations and variable message signs run from a management centre.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Dziesiątki skrzyżowań, kamery, pomiar ruchu (11 Feb 2016)
Claim 2 clm-47d917cf863fc512 descriptive
Built by Siemens
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
A Siemens director is quoted as representing the company that installed the system.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Super Express — Bubel za 30 mln powoduje korki (5 Sep 2008)
Claim 3 clm-5abb72c884d34d3b quantitative
with 14.2 million złoty from the EU's regional development fund
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM states that 14.2 million złoty for the system was granted in 2005 from the European Regional Development Fund.
Caveat
This is the EU grant for the first stage; the source does not give the stage's total cost.

Sources carrying this claim

  1. ZDM Warszawa — 100 mln z UE na projekty ZDM (2 May 2019)
Claim 4 clm-91e316df646bbb41 quantitative
it was switched on in autumn 2008 at 37 junctions
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM dates the start of operation to autumn 2008 and gives 37 junctions at launch.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)
Claim 5 clm-89f29a34a0ae6cc7 descriptive
with the stated aims of giving public transport priority and informing road users
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM says the system was created to control traffic, ensure priority for public transport vehicles and inform road users about incidents.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)
Claim 6 clm-3b9897dafec89445 quantitative
Across much of the network an adaptive algorithm, Sitraffic MOTION, generates candidate signal programmes every 3 minutes from detector data and changes programmes every 5–15 minutes
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM says the Sitraffic MOTION algorithm, operating over a large part of the system, generates candidate signal programmes every three minutes from detector data and that programmes change every 5–15 minutes depending on traffic.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)
Claim 7 clm-bf7d8032ea962ff7 descriptive
Priority uses the GPS positions of trams and buses
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM describes the priority subsystem as an exchange of information between signal controllers and trams based on GPS position; its 2026 explainer says controllers receive the locations of buses and trams.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Nowocześniejszy system zarządzania ruchem – pomoże komunikacji i kierowcom (3 Dec 2025)
  2. ZDM Warszawa — Sygnalizacja – coś więcej niż światła (12 Aug 2026)
Claim 8 clm-f7e0b18ef4802a44 descriptive
a controller can lengthen a green by a few seconds, weighing dwell time at the stop and delay against the timetable
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM says controllers also take into account dwell time at the stop and delay against the timetable and can extend green by a few seconds so buses and trams get through.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Sygnalizacja – coś więcej niż światła (12 Aug 2026)
Claim 9 clm-437e9f39712b961d quantitative
In December 2025 ZDM signed a six-year operating contract with Yunex
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM announced on 3 December 2025 that it had just signed a contract with Yunex to operate the system for the next six years.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Nowocześniejszy system zarządzania ruchem – pomoże komunikacji i kierowcom (3 Dec 2025)
Claim 11 clm-1de26d6c6b4563aa quantitative
for more than 223.5 million złoty, covering 479 junctions
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM gives the offer as over 223.5 million złoty and the base of the contract as managing a system of 479 junctions.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Nowocześniejszy system zarządzania ruchem – pomoże komunikacji i kierowcom (3 Dec 2025)
Claim 12 clm-7841ccbc1cc3bd16 quantitative
NIK, the Supreme Audit Office, found in 2009 that the system covered 37 junctions although the funding application had foreseen 158
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The auditor states that ZDM launched the system in 2008 at 37 junctions while, according to the funding application, it was to cover 158.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. NIK (Supreme Audit Office) — post-audit statement to the director of ZDM, P/09/178 (6 Nov 2009)
  2. NIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw, LWA-410-20-01/2009 (8 Dec 2009)
Claim 13 clm-d094dee3bd6a40b6 descriptive
because bids for the second and third areas far exceeded ZDM's budget
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The auditor explains that the prices offered for designing and building the second and third areas greatly exceeded what ZDM could spend.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. NIK (Supreme Audit Office) — post-audit statement to the director of ZDM, P/09/178 (6 Nov 2009)
Claim 14 clm-04a0920899eec3a1 descriptive
it also found that bringing pl. Zawiszy into the system had not removed the congestion there
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
After a site inspection with an appointed specialist, the auditor notes that ZDM's measures, including connecting pl. Zawiszy to the ZSZR, did not eliminate the congestion there.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. NIK (Supreme Audit Office) — post-audit statement to the director of ZDM, P/09/178 (6 Nov 2009)
Claim 15 clm-41bc4d914c1172bb quantitative
A second stage, studied in 2010 for 2011–2014, got no funding in the city's budget in August 2012 and was not being carried out when NIK checked in 2013
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The 2013 audit records a 2010 feasibility study with cost-benefit analysis for 2011–2014 and that at the council session of 30 August 2012 the project got no financing and was not being implemented when the audit ended.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. NIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw on traffic organisation, P/13/078 (18 Oct 2013)
Claim 16 clm-c1e3852b47f0dafb quantitative
70 junctions in February 2016
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM gave 70 signalised junctions in February 2016.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Dziesiątki skrzyżowań, kamery, pomiar ruchu (11 Feb 2016)
Claim 17 clm-091eab45a442226b quantitative
268 in August 2018
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM gave 268 junctions when the rebuilt control centre opened in August 2018.
Caveat
ZDM's own counts are not on one basis: in October 2017 it gave 97 junctions, ten months before the 268 figure.

Sources carrying this claim

  1. ZDM Warszawa — „Zielona fala” coraz dłuższa (8 Aug 2018)
Claim 18 clm-20cd4ef35c17aea3 quantitative
411 locations, signalised pedestrian crossings included, in 2023
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM says the system grew eleven-fold to 411 locations, and lists pedestrian crossings among the additions.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)
Claim 19 clm-e4145582bfebde0a quantitative
ZDM estimates that 10 to 20 per cent more cars pass the connected junctions per day than before, without publishing a method
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM writes that more cars pass connected junctions per day than before and that it 'estimates' 10 to 20 per cent; the release gives no measurement method.
Caveat
An operator estimate; throughput of cars is not the same as shorter journeys, and no independent evaluation was found.

Sources carrying this claim

  1. ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)
Claim 20 clm-271e02ae28fca77d quantitative
In 2011 the transport campaign group Zielone Mazowsze told the mayor that Warsaw's tram priority was conditional, granted only to late trams and only where car capacity allowed
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The group reports being told by the city traffic engineer that signal designs allow only conditional priority, for trams delayed against the timetable and without limiting car capacity.
Caveat
This is the campaign group's account of the policy in 2011, not an official statement.

Sources carrying this claim

  1. Zielone Mazowsze — letter to the Mayor of Warsaw on tram priority in traffic signals, TRP-10-005-01 (30 Jun 2011)
Claim 21 clm-aa5f4ad65f9aad22 descriptive
on Al. Jerozolimskie it had not shortened scheduled tram times
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The letter says the conditional approach guarantees that scheduled travel times will not be shortened anywhere, as happened in Al. Jerozolimskie, and calls the priority there a failure.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zielone Mazowsze — letter to the Mayor of Warsaw on tram priority in traffic signals, TRP-10-005-01 (30 Jun 2011)
Claim 25 clm-0e9d89d1251b8c8f descriptive
while the result ZDM reports is cars per day
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The effect ZDM reports for the system is more cars per day through connected junctions.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023)
Claim 26 clm-0f23c27e51786878 descriptive
Tram priority exists, but as a few extra seconds of green weighed against delay rather than a right of way
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ZDM's own description: on the basis of location, dwell time and delay, the controller can extend green by a few seconds.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ZDM Warszawa — Sygnalizacja – coś więcej niż światła (12 Aug 2026)
Claim 27 clm-89345b7f9fe47ec8 quantitative
which is what campaigners asked for in 2011
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The group asked for all trams to be given priority regardless of their position against the timetable, i.e. unconditional priority.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zielone Mazowsze — letter to the Mayor of Warsaw on tram priority in traffic signals, TRP-10-005-01 (30 Jun 2011)
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders

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 2026-10-17-baseline effective 2026-10-17 · created 2026-10-17

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

sha256:f560741769f41e32c196e2cf2ab8e250788a313ec62a014328a71317ebd06e50
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
27
of 27 claims mapped
13
source dossiers
13
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Zarząd Dróg Miejskich (ZDM), the City of Warsaw's road authority, with a contracted system operator (Siemens 2017–2025, Yunex 2026–2031)
Actor types
city-government, private
Funding model
mixed
Funding description
14.2 million złoty from the European Regional Development Fund (Integrated Regional Operational Programme, granted 2005) for the first stage; operation and expansion from the city budget through operator contracts: Siemens 2017–2025, nearly 124.5 million złoty gross; Yunex 2026–2031, more than 223.5 million złoty. A second EU-co-funded stage studied for 2011–2014 was not financed.
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

13 source dossiers

NIK (Supreme Audit Office) — post-audit statement to the director of ZDM, P/09/178 (6 Nov 2009) bip.nik.gov.pl · 4 linked claims

Open original source ↗

Stable source ID
src-fcafd35b75f42e14
Publisher
Name not classified · bip.nik.gov.pl
Type / language
pdf · language not classified
Published
2009-11-06
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The auditor's findings at the road authority for 2004–mid-2009: ZDM launched the ZSZR in 2008 at 37 junctions while the funding application foresaw 158; only one of three planned areas was built because bids for the other two far exceeded the money ZDM could commit; the control centre could integrate 200 junctions but the next stage was scheduled only for 2012; including pl. Zawiszy in the ZSZR had not eliminated congestion there. Cites the EU co-funding agreement of 11 April 2006.

Descriptive only — not page/paragraph exact
Claims linked
NIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw, LWA-410-20-01/2009 (8 Dec 2009) nik.gov.pl · 1 linked claim

Open original source ↗

Stable source ID
src-19f62681cbc74165
Publisher
Name not classified · nik.gov.pl
Type / language
pdf · language not classified
Published
2009-12-08
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The auditor's consolidated statement to the mayor (consolidated text): strategic transport goals not achieved; the ZSZR started only in 2008, covering 37 junctions against 158 planned; after the audit the city's multi-year investment plan halted or limited ZSZR stage II among other projects.

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Claims linked
NIK (Supreme Audit Office) — post-audit statement to the Mayor of Warsaw on traffic organisation, P/13/078 (18 Oct 2013) bip.nik.gov.pl · 1 linked claim

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Stable source ID
src-84aa4fcd7e5dc798
Publisher
Name not classified · bip.nik.gov.pl
Type / language
pdf · language not classified
Published
2013-10-18
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
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No archived copy linked
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Open the recorded source note

Audit of the city as traffic authority, 2011–2013: stage I of the ZSZR was completed in 2008; a feasibility study with cost-benefit analysis for 2011–2014 was prepared in 2010; at the council session of 30 August 2012 the project received no financing because of the city's financial situation and was not being implemented by the end of the audit.

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Claims linked
ZDM Warszawa — 100 mln z UE na projekty ZDM (2 May 2019) zdm.waw.pl · 1 linked claim

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Stable source ID
src-45bf8eedd2835359
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2019-05-02
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
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Open the recorded source note

ZDM's account of its EU-funded projects: the ZSZR was its first, built from scratch with 14.2 million złoty granted in 2005 from the ERDF under the Integrated Regional Operational Programme; it started three years later with subsystems for signal control, variable-message information, weather, tunnel control, public transport priority and data archiving; 37 junctions in 2008, 321 at the time of writing, 53 added in 2018.

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ZDM Warszawa — Dziesiątki skrzyżowań, kamery, pomiar ruchu (11 Feb 2016) zdm.waw.pl · 2 linked claims

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Stable source ID
src-c4aef31ff5e3d876
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2016-02-11
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
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Open the recorded source note

Operator description: 70 signalised junctions, 60 cameras, 16 traffic measurement stations, 5 variable message signs, tram priority control in Al. Jerozolimskie and the Wisłostrada tunnel; inductive loops and infrared detectors feed the control centre; 29 junctions added in 2014–2015.

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ZDM Warszawa — Nowy operator Zintegrowanego Systemu Zarządzania Ruchem (2 Oct 2017) zdm.waw.pl · 1 linked claim

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Stable source ID
src-b4ae43f8b3405301
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2017-10-02
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
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Open the recorded source note

Siemens chosen as operator for 2017–2025, contract value nearly 124.5 million złoty gross; obligation to add 5 junctions a year (40 over 8 years); modernisation of the SCALA system and the control centre; at the time 97 junctions.

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ZDM Warszawa — „Zielona fala” coraz dłuższa (8 Aug 2018) zdm.waw.pl · 1 linked claim

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Stable source ID
src-bc9abb62f311ff5f
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2018-08-08
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
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Open the recorded source note

Rebuilt control centre opened; the ZSZR covers 268 junctions; a further 40 junctions to join the 'green wave'.

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ZDM Warszawa — Ekspansja ZSZR – obejmuje już ponad 400 skrzyżowań (28 Mar 2023) zdm.waw.pl · 6 linked claims

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Stable source ID
src-103bb22bcd13ab11
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2023-03-28
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
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ZSZR running since autumn 2008, created to control traffic, give priority to public transport and inform road users; grew eleven-fold to 411 locations, including signalised pedestrian crossings; ZDM estimates 10–20% more cars a day through connected junctions; describes the Sitraffic MOTION algorithm (programmes generated every 3 minutes, changed every 5–15 minutes).

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ZDM Warszawa — Inteligentniejszy, większy, nowocześniejszy. Taki będzie Zintegrowany System Zarządzania Ruchem (8 Oct 2025) zdm.waw.pl · 1 linked claim

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Stable source ID
src-5546226dd56e55a1
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2025-10-08
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
Retrieved copy
No local capture recorded
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Open the recorded source note

Tender for the 2026–2031 operator: one bid, from Yunex, over 223.5 million złoty; the system has 450 junctions; a digital twin and AI analytics are listed as possible functions the operator will propose and ZDM will test.

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Claims linked
ZDM Warszawa — Nowocześniejszy system zarządzania ruchem – pomoże komunikacji i kierowcom (3 Dec 2025) zdm.waw.pl · 4 linked claims

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Stable source ID
src-dd5aabc47b480508
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2025-12-03
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
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Open the recorded source note

Contract signed with Yunex for six years, offer over 223.5 million złoty, managing 479 junctions; components include signal control, a public transport priority system exchanging data between controllers and trams on the basis of GPS position, 240 cameras, 16 measurement stations and variable message signs; about 20 junctions to be added per year; AI and a digital twin framed as a strategy the operator is to develop.

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Claims linked
ZDM Warszawa — Sygnalizacja – coś więcej niż światła (12 Aug 2026) zdm.waw.pl · 3 linked claims

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Stable source ID
src-681fb339d5c6e015
Publisher
Name not classified · zdm.waw.pl
Type / language
web-page · language not classified
Published
2026-08-12
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
Retrieved copy
No local capture recorded
Archive
No archived copy linked
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No captured content hash
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Open the recorded source note

How priority works: controllers receive bus and tram locations and take dwell time and delay against the timetable into account, and can extend green by a few seconds; the ZSZR has over 400 junctions and crossings; new operator contract for 2026–2031.

Descriptive only — not page/paragraph exact
Claims linked
Super Express — Bubel za 30 mln powoduje korki (5 Sep 2008) se.pl · 1 linked claim

Open original source ↗

Stable source ID
src-94769d6500dace83
Publisher
Name not classified · se.pl
Type / language
web-page · language not classified
Published
2008-09-05
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
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Open the recorded source note

Tabloid report from the first weeks: congestion persists or worsens where the ZSZR was installed; ZDM says 35 junctions are covered; a Siemens director says the company built the system and that calibration runs through September, with public transport given priority.

Descriptive only — not page/paragraph exact
Claims linked
Zielone Mazowsze — letter to the Mayor of Warsaw on tram priority in traffic signals, TRP-10-005-01 (30 Jun 2011) budzet2015.zm.org.pl · 3 linked claims

Open original source ↗

Stable source ID
src-bd6c21fe2749da09
Publisher
Name not classified · budzet2015.zm.org.pl
Type / language
pdf · language not classified
Published
2011-06-30
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-17
Dossier created
2026-10-17
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
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Open the recorded source note

Letter from the transport campaign group: Warsaw's traffic engineer allowed only conditional priority, given to trams late against the timetable and without reducing car capacity; the group calls this a disguised way of not granting priority, says the priority on Al. Jerozolimskie failed, and asks for unconditional priority and green waves for trams.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this file
  • 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.

Continue exploring

Compare this project

🇨🇭 Zurich Transit Signal Priority (ÖV-Beschleunigung) · Zürich Zurich made transit priority the governing principle at its signals; Warsaw's gives a few seconds of green, weighed against delay. 🇺🇸 Dallas Traffic Management Center & the Decade-Long Signal Backlog · Dallas Two signal networks grown slowly by contract; Warsaw's first stage built one of three planned areas.

Explore the wider context

🚦 Asphalt or algorithms📖 Adaptive traffic signals📖 Automated speed enforcement (speed cameras)📖 Congestion pricing
📎 Cite this project

1001 Smart Cities (2026). “Warsaw's Integrated Traffic Management System (ZSZR)” — Warsaw, Poland. The Smart City Atlas. https://1001smartcities.org/projects/warsaw-traffic-management-system/ (last verified 2026-10-17). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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