Technical and economic indexes of urban rail transit project 并列题名：Technical and economic indexes of urban rail transit project Electromechanical system and budget estimate of urban rail transit project Technical code of urban rail transit 并列题名：Electromechanical system and budget estimate of urban rail transit project Construction organization and budget estimate of urban rail transit project Signal and communication system of urban rail transit 并列题名：Construction organization and budget estimate of urban rail transit project