on 29 December 2019. Yogyakarta International Airport Rail Link, connecting Yogyakarta International Airport with was completed in September 2021. The Trans-Sulawesi Railway is under construction, and is built with standard gauge which is wider than the cape gauge used in Java and older lines in Sumatra to accommodate more weight and speed. Most new construction is concentrated on double- and quad-tracking of existing railway lines. In 2011, double-tracking of the line from Semarang to was begun. The project was finished with the double-tracking of the final segment between and Surabaya Pasar Turi on 8 May 2014. The line between and on Rajawali-Cikampek line is being quadrupled, with the first section between and opened on 14 April 2019. See also List of railway companies in the Dutch East Indies Monorails in Central Java References Rail transport in Indonesia Indonesia Rail