Analysis on the constraint mechanism of transportation carbon emissions in the Pearl River Delta based on ‘Dual carbon’ goals

Transportation not only provides support for economic and social development, but also has an important impact on emissions. Based on the DPSIR model, the constraint index system of transportation carbon emissions in the Pearl River Delta under ‘Dual carbon’ is constructed, and the hierarchical structure model is constructed by using the DEMATEL-ISM integration method. The constraint mechanism of transportation carbon emission in the Pearl River Delta is analyzed from the three dimensions of the correlation and importance, system hierarchical structure and constraint path of the constraints. The study found that there are six levels of constraints. The economic development level, carbon emission scale and the ‘Dual carbon’ goals are the core factors of the entire system. Developing public transport and intelligent transportation and increasing investment in new energy infrastructure and technology are conducive to the development of transportation in the Pearl River Delta and the realization of ‘double carbon’ goals.