Joseph Cheong, Technical Officer of Aerodromes at ICAO, discusses the updates of the latest 4th edition of Doc 9157 - Part 1. The manual provides further guidance and information that supports the operational practices and requirements needed for runway configuration, runway length, aeroplane performance parameters affecting runway length, and planning to accommodate future aircraft. In addition, the information covers factors like weather, geographical location, and airplane performance amongst others, that need to be considered in runway infrastructure. The publication is available here: https://store.icao.int/en/aerodrome-design-manual-runways-doc-9157-part-1