Kunming–Singapore railway instance of proposed railway line
The Kunming–Singapore railway is a network of railways that connects China, Singapore and all the countries of mainland Southeast Asia. The concept originated with the British and French colonial empires, which sought to link the railways they had built in southwest China, Indochina and Malaya, but international conflicts in the 20th century kept regional railways fragmented.  The idea was formally revived in October 2006 when 18 Asian and Eurasian countries signed the Trans-Asian railway Network Agreement, which incorporated the Kunming–Singapore railway into the Trans-Asian railway network.
The network consists of three main routes from Kunming, China to Bangkok, Thailand: the Eastern route via Vietnam and Cambodia; the Central route via Laos, and the Western route via Myanmar. The southern half of the network from Bangkok to Singapore has been operational since 1918. The Central route opened on 3 December 2021, with the opening of the Yuxi–Mohan railway and Boten–Vientiane railway linking with the other operational segments of the route, which formally connected Kunming and Singapore directly by rail. There have been plans for high-speed railway constructions, though only one line (between Bangkok and Nakhon Ratchasima) has since entered the construction phase.
The railway network is expected to increase regional economic integration and increase China's economic ties with Southeast Asia.History
Colonial railways
The British and French Empires first proposed building a railway from Kunming to Singapore in 1900 as Russia was completing the Trans-Siberian railway.  From 1904 to 1910, the French built the Yunnan–Vietnam railway, to connect Kunming with Hanoi and Haiphong in French Tonkin, now northern Vietnam.
In 1918, the southern line of the Thailand railway system was connected with British Malaya's west coast line, completing a metre gauge rail link from Bangkok to Singapore.  In the late-1930s, the British began to build the Yunnan–Burma railway but abandoned the effort in 1941 with the outbreak of World War II.
In 1936, Vietnam's main railway, from Hanoi to Saigon was completed.  This French-built system was (and still is) metre-gauge.
In 1942, the railways of Thailand and Cambodia were connected linking Bangkok and Phnom Penh, but this trans-border connection has long since fallen into disuse. The Japanese Empire built the infamous Thailand–Burma railway using prisoners of war to connect Bangkok and Yangon, but the entire line never entered commercial operation and is now partially submerged by the reservoir behind the Vajiralongkorn Dam.   
A continuous metre-gauge rail line from Kunming to Singapore via Hanoi, Saigon, Phnom Penh, Bangkok, and Kuala Lumpur was not realized as the French never built the "missing link" between Phnom Penh and Saigon, choosing to build a highway instead.21st century revival
In 2000, ASEAN proposed completing the Kunming to Singapore railway, via Hanoi, Ho Chi Minh City (formerly Saigon), Phnom Penh, and Bangkok.  This 5,500 km (3,400 mi) route is now known as the eastern route. In 2004, ASEAN and China proposed the shorter western route, which instead of running east through Vietnam and Cambodia, would go west from Kunming to Myanmar and then to Bangkok. In 2007 ASEAN and China proposed building three routes, the Eastern, Western and a central route via Laos.Central route
The central route including the Bangkok to Singapore section is approximately 3,900 km (2,400 mi) in length.  A trip from Kunming to Singapore will take 30 hours in 2022, and 18 hours when completed in 2040. (compared to 80 hours from Vientiane to Singapore in January 2019). The line will be used to transport both passengers and cargo.The central route consists of the following sections:
type of example of manifestation of representation of