Japanese researchers have calculated that Malaysia could make US$1.589 billion yearly from the Kuala Lumpur-Singapore High-Speed Rail (HSR) project in 2030, more than double the US$641 million per year Singapore would earn from the project.

The study by researchers from Japan's Institute of Developing Economies (IDE) was based on figures derived from using a computer simulation model developed by the institute to assess the HSR's economic impact...