Overview of the Report
The document is a post‑audit statement (Pokontrolne wystąpienie) issued by Poland’s Supreme Audit Office (Najwyższa Izba Kontroli, NIK) concerning the City of Warsaw’s measures to reduce transport‑related air pollution. It evaluates the city’s policies, investments, and compliance with environmental targets, offering an official assessment of recent actions.
Transport‑Pollution Mitigation Measures
NIK reviews Warsaw’s strategies to curb emissions from road traffic, highlighting the expansion of public transport, promotion of low‑emission vehicles, and implementation of traffic‑calming measures. The audit notes that the city has increased the share of zero‑emission buses, meeting the stipulated quota, and has invested heavily in metro infrastructure.
Metro Investment Details
The audit confirms that the city has allocated PLN 3.57 billion to metro projects, aiming to shift commuters from cars to electric rail. This substantial funding is presented as a core component of Warsaw’s effort to lower overall transport emissions and improve urban air quality.
Zero‑Emission Bus Fleet Progress
According to the report, Warsaw’s bus fleet now includes the required proportion of zero‑emission vehicles, fulfilling national targets. The audit cites specific numbers of electric and hybrid buses deployed, indicating progress toward a cleaner public‑transport network.
Planning and Implementation Gaps
While the audit praises the city’s investments, it points out that the comprehensive transport plan was not updated within the planned timeframe. This delay is identified as a risk to the coordinated execution of further pollution‑reduction initiatives.
Recommendations for Future Action
NIK advises Warsaw to accelerate the revision of its transport master plan, integrate more stringent monitoring of emission reductions, and ensure timely execution of upcoming infrastructure projects. The report emphasizes the need for continuous alignment with EU sustainability standards.
Key Findings at a Glance
- High‑priority funding for metro expansion (PLN 3.57 bn)
- Achievement of zero‑emission bus quota
- Positive overall assessment of pollution‑reduction measures
- Noted delay in updating the city’s transport plan
Source and Accessibility
The full audit statement is publicly available on the NIK website, providing detailed data, methodology, and the audit team’s conclusions. The document serves as an official reference for policymakers, researchers, and stakeholders interested in urban sustainability and transport‑related environmental performance.

