Project Profile: Chengdu Metro

The Chengdu Metro is a large-scale rapid transit network designed to address the urban mobility demands of Chengdu, the capital of China’s Sichuan Province. This project profile outlines the key technical specifications, operational parameters, and strategic impact of one of China’s most significant urban rail infrastructure developments, integrating advanced technology to facilitate economic growth and urban renewal.

Technical Specifications

The Chengdu Metro operates on a standard 1,435mm gauge track with 60kg/m rails, designed to handle high-frequency service. Power is supplied via a 750V DC third rail system with running rail return. The project’s civil engineering specifications accommodate a minimum curve radius of 300m in restricted urban areas and a maximum gradient of 35‰, influencing both rolling stock design and operational procedures.

Rolling stock is primarily supplied by Changchun Car Company, consisting of air-conditioned trainsets configured in three-car sets, expandable to five cars, with a design capacity of approximately 1,200 passengers per train. A key technological highlight is the comprehensive signalling suite provided by Casco, which includes Automatic Train Control (ATC), Automatic Train Protection (ATP), Automatic Train Stop (ATS), and Automatic Train Operation (ATO). This integration ensures high levels of safety, efficiency, and service frequency. Furthermore, Alstom provided advanced traction equipment for Lines 3 and 4, reflecting the project’s reliance on proven international technology.

Key Takeaways

• Economic Catalyst: The metro system is a cornerstone of Chengdu’s urban planning, designed to stimulate commercial activity in the city center and drive the redevelopment of older residential zones by enhancing connectivity and accessibility.
• High-Capacity Transit Solution: With a long-term daily ridership target exceeding 14 million, the network is engineered to manage the mobility needs of one of China’s fastest-growing megacities, significantly reducing traffic congestion and improving quality of life.
• Model for Sustainable Infrastructure: The project incorporates innovative, eco-friendly technologies, such as the natural ventilation system on Line 1. This, combined with high-efficiency signalling and electrical systems, establishes a benchmark for sustainable urban rail development in a high-density environment.

Frequently Asked Questions (FAQ)

What is the current status of the Chengdu Metro project?
As of 2026, the Chengdu Metro is a largely operational rapid transit system. The initial core lines are complete, and the network is undergoing continuous expansion with new lines and extensions being planned and constructed to meet the city’s growing urban mobility demands.

Who is building the Chengdu Metro?
The Chengdu Metro project involves collaboration with several key international and domestic suppliers. Major contributors include Changchun Car Company for the rolling stock (trains), Casco for the advanced signalling and train control systems, and Alstom, which supplied critical traction equipment for several lines.