Emission assessmentin operation period when replacing Cat Lai Ferry with river crossing bridge

Abstract

Road ferries are among the preferred solutions commonly employed due to their transport capacity and relatively low investment costs in facilitating connectivity. This study evaluates the emissions of the Cat Lai Ferry in comparison with the planned Cat Lai Bridge, using an emission inventory approach to clarify the necessity of constructing a river-crossing bridge to replace short route ferries and other alternatives. The results indicate that in the ferry scenario, CO emissions are nearly equivalent, while NOxemissions are 8.2 times higher compared to the bridge scenario. The study recommends implementing emission mitigation measures when the bridge becomes operational, while also considering the use of cleaner fuels should the ferry continue to operate. The results provide a scientific basis for selecting appropriate transport infrastructure solutions to reduce air pollution associated with existing short route ferries.