
For decades, commuters wishing to travel from the city's north to its east (and vice versa) have had to deal with bottom-clenching traffic jams on Lat Phrao and Srinakarin roads, two heavily congested roads which form the city's main north-east corridor. In 2005, in a bid to clear up some of the congestion, the Yellow Line was first proposed -- initially as a heavy underground rail service -- but it wasn't until 2012 that substantial plans to build it as a monorail link along the north-east corridor began to surface.
Since construction began in 2017, the project has faced numerous delays -- first, due to problems relating to land appropriation, and then when the Covid-19 pandemic struck, which meant the components needed to build the monorail weren't able to be delivered, and the few which were couldn't be installed anyway as manpower, just like raw materials, was stuck at the border.