On August 7^th, 2017, CISDI received a Letter of Award to conduct environmental protection surveys and investigations of the north extension to Line 3 of Chongqing Urban Rail Transit System. It will be the 6^th environmental impact assessment project undertaken by CISDI since entering into the URT market of Chongqing.

The north extension to Line 3 of Chongqing URT System is approximately 11km long in total, with 6 stations. Mainly covering the area north to Chongqing Jiangbei International Airport, it’s been in operation as one of the important parts of the urban rail transit network as of the end of 2016.