Phase I: from 1961 to 1978
Year 1961
Roads, Waterway Design Istitute and Railway Design Institute
Year 1962
Transport Engineering Design Institute
Year 1978
Transport Engineering Design Institute and Waterway Survey Design and Survey Institute
Phase II: from 1978 to 1982
Year 1978
Transport Design Institute and Waterway Design and Survey Institute
Year 1982
Transport Design Institute
Phase III: from 1982 to 2004
Year 1990
Establishment of International Association Company: Asean Pacific Engineering Company-(APECO)
Year 1993
Transport Engineeering Design Inc. (TEDI)
Year 1995
Transport Engineeering Design Inc. with 5 sub-companies
Year 2004
Equitization of Subsidiary companies, TEDI operates under the model of holding company
Phase IV: from 2014 to the present
Year 2014
Transport Engineeering Design Inc. – JSC