Climate change and accelerated development that threaten the survival of humankind require an urgent review of planning approaches to achieve sustainable development, including transport systems, since the quantity of motorized traffic and GHG emissions is increasing yearly. Urban planning of post-industrial cities, the digital age, climate change - all this requires that urban planning is not only the planning of settlements where residents will meet their functional needs, but also for cities to be leaders in the fight against climate change. The question arises as to which planning approach is the most suitable for planning sustainable cities in the 21st century. After a literature review and research of the authors, urban corridor planning is suggested as one of the possible planning strategies. When planning new or revitalizing existing intra-city corridors within urban areas, to take into account their spatial, environmental, social and economic sustainability is necessary. After an analysis, indicators of urban corridor planning were extracted, and the article highlights the advantages and priorities. The contribution of the article is in determining the ten basic principles of urban corridor planning. It is concluded that implementation of urban corridor planning principles in the planning of intra-city corridors achieves the result of urban sustainability.