Exploring the potential demand for Jakarta–Bandung high-speed rail

•Analyzing the choice between new high-speed rail, conventional trains, and private cars via toll roads among Jakarta-Bandung travelers.•Applying the mixed logit model and the modification of the theory of planned behavior.•Demand for new high-speed rail comes from conventional train passengers, while car users keep using their vehicles via toll roads.•Sociodemographic, trip characteristics, and travelers’ perceptions on HSR significantly influence the new high-speed rail demand.•Outlining policies to increase the passenger demand for new high-speed rail.