The Wenhu Line: How a Metro System Turned Failure into Urban Routine

30-Second Overview: The Wenhu Line is today a familiar brown line for Taipei residents, but its predecessor, the Muoshan Line, faced fire alarms, blowouts, beam cracks, and a crisis of trust before its opening. This article begins with the first metro line in 1996, tracing how a foreign system was re-understood and maintained by a Taiwanese team after the original manufacturer withdrew, eventually becoming the infrastructure that carries people through the city every day. The focus is not on the glorious label of “the first metro,” but on how a public system passed on the knowledge left by failures to the next train.

A Quick Look at the Timeline

This table does not compress the Wenhu Line into four dates. It simply places the reader at the correct entry point; the subsequent engineering, contracts, and urban changes unfold along this timeline.

Image: Lokseng01 / Wikimedia Commons. License: CC BY-SA 4.0. Unmodified. File page: Wikimedia Commons

Image: Jack.T / Wikimedia Commons. License: CC BY-SA 4.0. Unmodified. File page: Wikimedia Commons

In 1993, two fire incidents occurred in succession during the testing of the Taipei Metro’s Muoshan Line. In 1995, trains suffered two blowouts after running over foreign objects. It was not until March 28, 1996, that this 10.9-kilometer route, featuring 12 stations, officially became Taiwan’s first commercially operated metro line.^{3 2 5}

At that time, Taipei residents were not waiting for a beautiful new transportation tool, but for an answer that they could finally dare to take. The tone left in newspapers and magazines was direct: the opening date of the Muoshan Line was delayed again and again, and the public’s question shifted from “When will it open?” to “Even if it opens, would you dare to ride it?”⁶

This is the most memorable aspect of the Wenhu Line. It was not a modern metro line that was flawless from planning to operation, but a public project that survived by relearning after integration failures and the collapse of trust.

The Wenhu Line Did Not Start as a Single Line

Today, the Wenhu Line is composed of the Wenshan section of the Muoshan Line and the later extended and integrated Neihu section. This article returns first to the earliest opened Muoshan Line, because the reliability and urban significance of the Wenhu Line began from that unstable starting point. According to route data from the Taipei Metro Engineering Bureau, the earliest opened Muoshan Line started from Zoo Station, passed through the Wanfang Community and the area around Fuzhou Mountain, then entered a tunnel, connected to Heping East Road and Fuxing North and South Roads, with the terminal at Zhongshan Junior High School Station. The original route was 10.9 kilometers long, with 12 stations and one maintenance depot.³

It chose a medium-capacity, fully automated rubber-tyred system. This choice was driven by urban conditions. Taipei needed a route that could serve the Muzha and Wenshan areas without requiring construction on the scale of traditional heavy-rail metros. However, smaller carriages and more complex automatic controls did not make integration work any simpler.^{3 1 4}

The full name of the Wenhu Line is the result of the junction between the Muoshan Line and the Neihu Line. Data from the Metro Bureau indicates that the Neihu Line started from the tail track at Zhongshan Junior High School Station, passed through Fuxing North Road, Songshan Airport, Dazhi, and Neihu, and finally entered the Nangang Economic and Trade Park. This section of the route is approximately 14.8 kilometers long, with 12 stations and the Neihu Depot. The Neihu Depot and the Muoshan Depot jointly handle the storage, inspection, maintenance, repair, and testing of Wenhu Line trains.⁴

The Neihu Line was not an extension connected immediately after the Muoshan Line opened. The Metro Bureau’s historical records state that after tire fires occurred during the Muoshan Line testing, the Taipei City Council demanded a re-evaluation of the Neihu Line’s system choice. After approximately eight years of analysis and voting, the decision was ultimately made to adopt an elevated medium-capacity system. This delay shows that the shape of the Wenhu Line’s route was not merely the result drawn by engineers, but a zigzag line pulled together by accidents, the city council, and urban demands.⁴

Image: Lokseng01 / Wikimedia Commons. License: CC BY-SA 4.0. Unmodified. File page: Wikimedia Commons⁷

A metro is not just about putting trains on tracks. Civil engineering, signaling, power supply, rolling stock, braking, and the control center must understand each other at the same time point. The story of the Wenhu Line constantly returns to this issue that seems to only interest engineers: just because every system can operate independently does not mean they will function normally when connected.

Fire Incidents Were Not Caused by a Single Broken Part

The 50th issue of Metro Technology, published by the Taipei Metro Bureau, left explanations more detailed than news headlines. The Muoshan Line’s VAL256 system was originally designed for single-carriage operation or pairs of two-carriage sets. Due to capacity demands, Taipei adopted a configuration of two pairs of cars, totaling four carriages, for the first time.¹

The problem lay in the lack of synchronized coordination for propulsion and brake signals between the two pairs of cars. When the braking action of one pair of cars was not synchronized with the other, the brake calipers might bite the brake pads, generating high temperatures that subsequently burned the rubber tires. This explanation does not shift responsibility to a single screw; rather, it points to integration failure among vehicle configuration, control logic, and braking mechanisms.¹

After the first fire incident, the true cause was not immediately eliminated. Another fire incident occurring within half a year did not cause mere inconvenience to citizens, but raised the question: “Is this system actually understood?”¹

Such questions leave traces in the city. A retrospective in Formosa wrote that beam cracks, fire-burning trains, derailments, and blowouts occurred in succession, and the Muoshan Line’s testing incidents almost formed their own chronicle.⁶ A metro that had not yet opened learned how to become news first.

Beam Cracks and the Interface of Engineering

Beyond vehicle accidents, the Muoshan Line also had civil engineering issues. The Metro Technology journal recorded that the Muoshan Line’s beam cracks were related to design and construction conditions. To beautify the environment, beam and column dimensions were reduced, making steel reinforcement too dense and concrete difficult to mix evenly. Experts had to inspect it later, and it was reinforced with external steel plates.¹

This incident and the fire incidents appear to be two separate stories, but they actually point to the same core: the most difficult part of large-scale public works is not finding a system that is nominally the most advanced, but enabling different professions to share the same responsibility on site.

The retrospective on pier reinforcement before opening also brought this responsibility back to structural safety. Engineer Chen Chen-chuan viewed the beam cracks, appraisal, and reinforcement as engineering challenges that had to be faced before opening. This is the engineering perspective of the column author, not the investigation conclusion of the Control Yuan, but it reminds readers that safety never exists only in the train controller.⁸

Civil engineering delays also pushed this issue into contracts. The Metro Technology journal recorded that the delayed delivery of the Muoshan Line’s civil facilities caused Matra to delay its entry and submit claims for cost losses. The subsequent arbitration listed overly detailed division of contracts, complex interfaces, difficult integration, and difficulties in contract execution as important background factors.¹

The Control Yuan’s correction case, reviewed in 2010 and announced in 2016, looked back at the Wenhu Line’s electromechanical system with more institutionalized language. The case determined that the electromechanical system was the core of the Wenhu Line, but the Metro Bureau listed it as a subcontract. Before bidding, it did not review manufacturer qualifications nor require technical service proposals. The Control Yuan also pointed out that post-bidding performance and inspection operations were not sufficiently cautious, causing frequent accidents after opening for operation.⁹

The time gap is important. The Control Yuan’s correction case was not the news of the 1990s, but a formal institutional review years later. Putting them together allows us to see the two memories of the Muoshan Line: people at the time saw accidents and delays, while later investigations asked why procurement, interfaces, and performance allowed accidents to recur.

Before Opening, Trust Reached the End

On February 27, 1996, the Muoshan Line began free trial rides first. Formosa recorded that during the four-week trial, cumulative ridership exceeded 1.8 million people. Aside from one or two minor failures, no major accidents occurred.⁶

This free trial was not just a promotional activity; it was also a stress test participated in by citizens. The engineering team needed to observe how trains, stations, and crowds operated together, while citizens used their own bodies to decide whether they were willing to hand over their daily commute to it.

After officially opening on March 28, the Muoshan Line became the first commercial route of the Taipei Metro. It connected the Zoo, Muzha, Wanfang, and the city center, and for the first time, the metro transformed from a construction site into urban daily life.³

The scene of the opening therefore had two speeds. One was the train moving forward on the elevated tracks; the other was citizens slowly changing “dare not ride” to “can ride tomorrow.” Public trust is not automatically generated by ribbon-cutting; it must be accumulated through every on-time arrival.

On July 4, 2009, the Neihu Line officially joined operations. The Muoshan Line and Neihu Line were collectively called the Wenshan-Neihu Line, later named the BR Wenhu Line in accordance with the route numbering system. This date was not just the ribbon-cutting of an extension; it allowed the first metro, originally serving the Wenshan area, to pass through the airport, Dazhi, and Neihu, becoming a continuous route spanning the living circle on the east side of Taipei.^{3 4}

Image: Lokseng01 / Wikimedia Commons. License: CC BY-SA 4.0. Unmodified. File page: Wikimedia Commons¹⁰

After Matra Withdrew, Who Would Repair This System?

Two months after opening, a new crisis emerged. A retrospective in the United Daily News reported that Matra withdrew unexpectedly due to contract issues and prohibited subcontractors from selling parts to the Taipei Metro Company, causing the Muoshan Line to suffer a major breakdown. The report also recorded that then-Taipei Mayor Chen Shui-bian shouted, “If Matra won’t pull, we will pull ourselves.”²

This phrase remained not just because of its rhyme, but because it turned an abstract contract crisis into a political promise citizens could understand: if the original manufacturer no longer provided support, could Taipei make the trains continue to run on its own?

A 2026 retrospective by the Taipei City Government on the 30-year history of the Muoshan Line stated that when Matra technicians withdrew, they took key maintenance manuals and software passwords. Consequently, the Taipei Metro had to quickly establish operations and maintenance capabilities without original manufacturer technical support.⁵

Here, some distance must still be maintained. The 2026 official retrospective is institutional memory from later, not equivalent to the complete original records of 1996. But it connects with the event retrospective in the United Daily News and the Metro Technology journal’s description of technical learning, showing that the problem after the withdrawal was not just a batch of parts, but who held the knowledge.^{2 5 1}

The Metro Technology journal referred to these crises as “event-oriented project learning,” placing the cause of fire incidents, arbitration, and beam reinforcement in the same technical construction context. This method of organization is more useful than “accidents occurring in succession,” because it asks which replicable working method was left behind by each failure.¹¹

The Taipei Metro later developed alternative components through R&D, strengthened monitoring, improved hardware, and collaborated with local manufacturers to develop parts and consumables. The official side described this experience as a turning point that broke the original manufacturer’s monopoly and laid the foundation for the localization of maintenance spare parts.⁵

From an engineering perspective, this was a forced technology transfer. From a city perspective, it was a lesson that a public service cannot only be used; it must also be understood and maintained.

The Metro Began to Change More Than Just Commuting

After the Muoshan Line opened, the changes brought by the metro quickly exceeded transportation itself. Academic studies focused on the areas around Muoshan Line stations, analyzing changes in land use for commercial, residential, and public facilities. The studies viewed stations as nodes for the redistribution of urban space, rather than mere boarding and alighting points.¹²

Reports from Formosa at the time also captured this transformation. Tour groups from central and southern Taiwan brought flags to metro stations to “witness” the advanced electric multiple units. Crowds appeared at the Muzha Zoo and along the commercial districts. For those riding for the first time, the metro was not a tool for daily round trips, but a new landscape in Taipei worth being observed.⁶

Years later, a Public Television Service (PTS) retrospective on the 30th anniversary of the Muoshan Line described it as a route that gradually built operations and maintenance capabilities from “the most arduous battle.” The report also reminded that low ticket prices, electricity costs, personnel expenses, and rising operational costs remain challenges for the Taipei Metro today.¹³

This prevented the Muoshan Line from stopping at a pretty success story. Its early problem was whether it could open safely; the later problem was whether it could serve long-term at a reasonable cost. The former tested engineering integration; the latter tested the finance and governance of public services.

The Engineering Ethics Left by the Wenhu Line

The Wenhu Line is often simplified as “the later of Taiwan’s first metro.” This label is not wrong, but it is too light. It hides the cracks before opening, the fire incidents during testing, the social mockery of safety, and the awkwardness of having to find knowledge on one’s own after contract interruption.

If one only remembers March 28, 1996, the metro is seen as a finished product. Only by placing the 1993 fire incidents, the 1995 blowouts, the 1996 trial rides and withdrawal, and the subsequent supervision and technical reviews on the same timeline can one see that it was actually a learning process.^{2 6 1 9}

This is also the most practical reminder the Wenhu Line offers to today’s engineers: system reliability is not declared in presentations, but determined by whether the team can find the cause after a failure, preserve knowledge, correct interfaces, and allow the next train to depart as usual.

30 years later, the Wenhu Line is no longer the Muoshan Line doubted by citizens. However, the city still uses the results it left behind every day and still bears the costs of large-scale systems. True success is not never making mistakes, but errors not being hidden, eventually becoming a capability that others can also take over.

📝 Curator’s Note
The Wenhu Line should not only be seen as a brown line, nor only remembered as the accident chronicle of the Muoshan Line. What is truly interesting about it is that the same public system left behind three kinds of time: failure before opening, self-reliance after the original manufacturer withdrew, and the stability that today’s passengers hardly notice. This is the curator’s judgment of this article, not a direct quote from any single source.

Further Reading

You can further read the route data from the Taipei Metro Engineering Bureau, the Metro Bureau’s technology journal, and the Control Yuan’s correction cases. The three provide different perspectives on current status, engineering learning, and institutional review.

References