The Baltic Sea Region consists of nine countries, eight of which are EU member states (Denmark, Estonia, Finland, Lithuania, Latvia, Poland, Sweden, and part of Germany) and part of Norway. Through increasingly close cross-border cooperation, the entire region is working together to seize shared opportunities and overcome threats and challenges. One of these shared challenge is ensuring that countries, regions, and cities develop in a sustainable and resilient way. Sustainable transport systems are a key element of sustainable cities and their functional areas. They provide mobility solutions that enable residents to move in a safe, accessible, efficient, and environmentally friendly manner.

Sustainable Urban Mobility Plans (SUMPs) are strategic planning tools that help cities create sustainable transport systems. They take an integrated approach to mobility, combining spatial planning, public transport, walking and cycling, urban logistics and private vehicle use within a single framework.