Permanent project revision
Revision 2026-10-17-baseline · effective 2026-10-17
Current revision. This is the snapshot used by the live entity page.
Created the first structured Evidence Passport with 27 claims and 13 source dossiers.
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add /evidencePassport — Added claim-level evidence mapping and source dossiers.add /revisionHistory — Established a permanent, hash-addressed baseline revision.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.
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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
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descriptive
Built by Siemens
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quantitative
with 14.2 million złoty from the EU's regional development fund
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quantitative
it was switched on in autumn 2008 at 37 junctions
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descriptive
with the stated aims of giving public transport priority and informing road users
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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
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descriptive
Priority uses the GPS positions of trams and buses
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descriptive
a controller can lengthen a green by a few seconds, weighing dwell time at the stop and delay against the timetable
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quantitative
In December 2025 ZDM signed a six-year operating contract with Yunex
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descriptive
the only bidder
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quantitative
for more than 223.5 million złoty, covering 479 junctions
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quantitative
NIK, the Supreme Audit Office, found in 2009 that the system covered 37 junctions although the funding application had foreseen 158
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descriptive
because bids for the second and third areas far exceeded ZDM's budget
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descriptive
it also found that bringing pl. Zawiszy into the system had not removed the congestion there
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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
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quantitative
70 junctions in February 2016
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quantitative
268 in August 2018
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quantitative
411 locations, signalised pedestrian crossings included, in 2023
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quantitative
ZDM estimates that 10 to 20 per cent more cars pass the connected junctions per day than before, without publishing a method
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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
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descriptive
on Al. Jerozolimskie it had not shortened scheduled tram times
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descriptive
Warsaw's first stage delivered one of three planned areas
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quantitative
five under the 2017 contract
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quantitative
about 20 under the 2025 one
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descriptive
while the result ZDM reports is cars per day
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descriptive
Tram priority exists, but as a few extra seconds of green weighed against delay rather than a right of way
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quantitative
which is what campaigners asked for in 2011
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.
Awaiting operator and domain-expert review; publication of this revision implies neither.
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src-fcafd35b75f42e14The 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.
src-19f62681cbc74165The 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.
src-84aa4fcd7e5dc798Audit 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.
src-45bf8eedd2835359ZDM'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.
src-c4aef31ff5e3d876Operator 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.
src-b4ae43f8b3405301Siemens 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.
src-bc9abb62f311ff5fRebuilt control centre opened; the ZSZR covers 268 junctions; a further 40 junctions to join the 'green wave'.
src-103bb22bcd13ab11ZSZR 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).
src-5546226dd56e55a1Tender 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.
src-dd5aabc47b480508Contract 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.
src-681fb339d5c6e015How 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.
src-94769d6500dace83Tabloid 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.
src-bd6c21fe2749da09Letter 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.