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Decision Support Tool

Find the Right Policy Measures for Sustainable Shared Mobility in Your City

Evidence-based decision support using PROMETHEE-GAIA multi-criteria analysis and expert insights from cities across Europe

Compare Business Activities

Explore regulatory, economic, and informative policy options ranked by effectiveness

Based on Expert Knowledge

Drawing on surveys from city planners, transport operators, and researchers across multiple countries

Customizable to Your Priorities

Choose pre-defined stakeholder perspectives or adjust goal weights to match your city's unique priorities

Learn how it works Start your analysis

How to use this tool

3 simple steps to get started

1

Select a stakeholder perspective

Choose the stakeholder group (e.g., "Municipality", "Finance") whose viewpoint you want the ranking to reflect. You can also customize weights for a tailored analysis.

2

Review or define analysis parameters

Set criteria weights and thresholds to customize the multi-criteria analysis according to priorities and constraints.

3

Review rankings & visualization

Examine the PROMETHEE scores, rankings, and GAIA plane visualization to understand trade-offs and recommendations.

Understanding the Methodology

Multi-criteria decision analysis approach with PROMETHEE and GAIA visualization

What is PROMETHEE?

PROMETHEE (Preference Ranking Organisation METHod for Enrichment Evaluations) is a Multi-Criteria Decision Analysis (MCDA) method used to evaluate and rank alternatives when multiple, and sometimes conflicting, criteria must be considered simultaneously.
It handles both quantitative data (e.g. costs, travel times) and qualitative factors (e.g. environmental impact, social acceptability), making it well-suited for complex decisions like urban transport policy evaluation. It also incorporates the diverse perspectives of multiple stakeholders (citizens, businesses, public authorities) by building preference relations between alternatives based on how each group values the criteria.

What is GAIA?

GAIA (Graphical Analysis for Interactive Assistance) is the visual, interactive companion to PROMETHEE. It displays evaluation results graphically on a GAIA plane, mapping both the policy alternatives and the evaluation criteria together. This visual representation helps stakeholders — regardless of their technical background — better understand the analysis, communicate results, and identify trade-offs and areas where preferences converge or conflict.

How to read the PROMETHEE-GAIA results?

PROMETHEE-GAIA results combine two complementary outputs:

  • PROMETHEE provides a ranked order of alternatives, reflecting how well each performs across all weighted criteria and stakeholder preferences.
  • The GAIA plane visually maps these alternatives alongside the criteria, revealing which policies excel in specific areas and where tensions between different objectives lie.

Together, they allow users to quickly identify the strongest policy options, understand key trade-offs, and assess the overall robustness and consensus behind the recommended solutions.

Pro tip for interpretation

Compare results across different perspectives to identify measures that work well for multiple stakeholders.

Data Collection & Expert Surveys

What data is this analysis based on?

2025-2026

Survey period

24

Experts participated in the survey

9

Cities represented in the expert survey

10

Business activities evaluated in the analysis

The data used for this analysis was collected through expert surveys. The participants included :

  • New Shared Mobility provider
  • Public transport operators
  • Regulatory authorities

The survey is focused on understanding the effectiveness of different policy measures for sustainable shared mobility (identified in Business Activities), as perceived by these experts based on their experience and knowledge of their respective cities. The analysis is based on the responses collected from these surveys, which were conducted between 2025 and 2026.

3

Results

Review the analysis outcomes and recommendations

Please select a stakeholder perspective to view results.
The rankings and recommendations shown are derived from rigorous methodology and expert data, but they do not guarantee actual performance in your city or region. Factors such as local regulations, infrastructure, culture, and stakeholder engagement can all impact real-world results. Please use this information in conjunction with local expertise and detailed feasibility assessment.