Navigation

Unit 1 Stepping into the Colorful Metro World
Unit 2 Basic Equipment
Unit 3 Power Supply System
Unit 4 Signaling System
Unit 5 Telecommunication
Unit 6 Vehicles and Locomotives
Unit 7 Metro Security
Unit 8 Urban Rail Transit Operation

Unit 4 Signaling System

Unit 4 Signaling System
Listening Task 1-Task 2
Listening Task 3
Listening Task 4
Intensive Reading
Extensive Reading