Project Profile: Seoul Metropolitan Subway System Expansion

The Seoul Metropolitan Subway System Expansion is a multi-faceted infrastructure initiative focused on enhancing network capacity, deploying next-generation automation, and extending key lines to improve regional connectivity. This project integrates advanced Communications-Based Train Control (CBTC) signaling with the strategic rollout of driverless rolling stock, reinforcing Seoul’s leadership in efficient, high-capacity urban rail transit.

Technical Specifications

The system’s technological upgrade is centered on the implementation of advanced signaling and automation. Thales has been contracted to supply its SelTrac™ CBTC signaling system, which enables shorter headways between trains and increases line capacity. This includes the installation of Vehicle On-Board Controllers (VOBC) for new driverless trains, particularly on high-density routes like Line 2. The expansion projects, such as the extension of Line 8 and the enhancement of Line 6’s connectivity to the Gyeongchun Line, are designed to integrate seamlessly with this upgraded signaling infrastructure, ensuring network-wide operational efficiency.

Rolling stock for the new and upgraded lines is primarily supplied by Hyundai Rotem. The fleet includes both conventional and fully autonomous trainsets designed for high passenger throughput and energy efficiency. The successful implementation of a three-track system on sections of Line 9, allowing express and all-stop services to operate concurrently, serves as a key infrastructural model for maximizing passenger flow on critical corridors connecting urban centers with satellite cities and international airports like Gimpo.

Key Takeaways

• Pioneering Public-Private Partnerships: The financing and operational model for Line 9, involving entities like Macquarie Korea Infrastructure Fund (MKIF) and Veolia, provides a robust, scalable framework for funding large-scale public transit projects globally.
• Automation as a Core Strategy: The deliberate shift towards driverless train operations (DTO) and CBTC signaling represents a strategic commitment to enhancing safety, reducing operational costs, and maximizing network capacity to meet future demand.
• Data-Driven Passenger Experience: The integration of technologies extends beyond operations to the passenger journey. The system utilizes RFID-based contactless ticketing (T-money) and multilingual information systems, creating a seamless and accessible transit environment.

Frequently Asked Questions (FAQ)

What are the main upgrades in the Seoul Subway expansion?
The main upgrades include the extension of several subway lines like Lines 6, 7, and 8 to improve connectivity, the installation of advanced CBTC signaling systems by Thales to increase train frequency, and the introduction of new driverless trains from manufacturers like Hyundai Rotem to enhance operational efficiency and safety.

Who are the key companies building the new Seoul subway lines?
The expansion involves several key international and domestic companies. Hyundai Rotem is a primary manufacturer of the rolling stock, including the new driverless trains. The French technology company Thales is providing the critical signaling systems. Operations and maintenance on specific lines, like Line 9, are managed through partnerships involving companies such as Veolia Transport Korea.