  Heatwaves pose significant health risks, particularly due to prolonged
exposure to high summer temperatures. Vulnerable groups, especially pedestrians
and cyclists on sun-exposed sidewalks, motivate the development of a route
planning method that incorporates somatosensory temperature effects through
shade ratio consideration. This paper is the first to introduce a pipeline that
utilizes segmentation foundation models to extract shaded areas from
high-resolution satellite images. These areas are then integrated into a
multi-layered road map, enabling users to customize routes based on a balance
between distance and shade exposure, thereby enhancing comfort and health
during outdoor activities. Specifically, we construct a graph-based
representation of the road map, where links indicate connectivity and are
updated with shade ratio data for dynamic route planning. This system is
already implemented online, with a video demonstration, and will be
specifically adapted to assist travelers during the 2024 Olympic Games in
Paris.
