The system will be designed as a full turn-key package for the Red Line construction project in Bangkok.
Under the deal, MHI will be responsible for the design and procurement of systems other than rolling stocks and Hitachi will design and build the rolling stocks.
The deal will see Sumitomo responsible for administration work and local installation work.
The move is to cater the growing population in Thailand, which is mostly dependent on automobile transportation, and results in traffic congestion, as well as air pollution from automobiles.
The 41km metre-gauge Red Line construction project, to be built as a fully elevated rail system, includes two elevated lines to the north of Bangkok.
The 26.4km north line will link Bang Sue with Rangsit, while the 14.6km west line will run from Bang Sue to Taling Chan.
North Line will be built using the Japan International Co-operation Agency’s (JICA’s) International Yen Loan, while the Thai government is using its own fund to build the west line.
Construction of the red line is expected to be completed in 2020.
Scope of work under the contract includes designing and building trackworks, overhead catenary system, power supply system, signaling system, communication system and rolling stock.