Abstract. The Cosmological Axis of Yogyakarta was designated as a
UNESCO World Heritage Site in 2023, highlighting its Outstanding
Universal Value (OUV). However, rapid urbanization and increased vehicle
emissions threaten the area's cultural and environmental sustainability. This
study aims to address these challenges by evaluating perceptions of
sustainable mobility solutions and their alignment with OUV requirements.
Using geospatial analysis, emission modeling, and stakeholder surveys, the
research identifies critical traffic patterns and emission hotspots. The
findings reveal that while most areas maintain acceptable air quality, zones
with high congestion require targeted interventions. The proposed
recommendations include enhancing public transportation with lowemission
vehicles,
expanding
pedestrian
and
cycling
infrastructure,
and

implementing
low-emission
zones.
These
measures
aim
to
preserve
the

cultural and ecological integrity of the Cosmological Axis while fostering
environmental and social well-being. This study contributes to sustainable
heritage management by providing actionable insights for urban planners
and policymakers in managing World Heritage Sites under the pressures of
climate adaptation.