Our Strengths

Smart Maintenance

for Rolling Stock

JR East is continually carrying out condition-based maintenance (CBM) and risk-based maintenance (RBM). These maintenance methods lead to higher reliability and lower maintenance costs.

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  CBM on Commuter Train

  • Monitors and analyzes big data to assess the condition of rolling stock and detect potential defects to prevent failure.
  • Identifies signs of failure and take preventive actions to minimize the possibilities of failure.

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  RBM for Purple Line in Thailand

  • Evaluate the risk of breakdowns and perform maintenance at appropriate intervals.
  • Contribute to the provision of reliable railway transportation services.
  • Achieved no serious incidents reported in 2023.

for Infrastructures

Innovative equipment installed in not only inspection cars but also passenger cars collects various data. Analyzing this data enables efficient maintenance.

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  Inspection car with monitoring function

  • This inspection car is installed with cameras and sensors that capture images and other data of the catenary and track.
  • AI-based image recognition has been introduced.

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  Passenger car with monitoring function

  • The catenary and track inspection equipment installed in passenger cars continuously collect various data during service operation.
  • This allows for a rapid response before a serious failure arises, improving reliability and saving labor.
  • AI supports our work.

Mega Railway Projects

JR East, with state-of-the-art techniques in engineering and project management, has successfully completed mega railway infrastructure projects with minimum impact on railway operations and services.

Major Station Reformation

Shibuya Station, a large-scale terminal serviced by 4 private railway companies with 9 lines, plays a key role for a public transportation node, boasting nearly 310,000 passengers daily on the JR East Lines. Station facilities have been repeatedly expanded and renovated in line with the development of the surrounding area. These changes eventually led to a less user-friendly station due to complicated transfers, aging station facilities, and lack of barrier-free routes. To address these issues, JR East implemented drastic improvements toward its functions, including parallelization and expansion of the platforms while maintaining scheduled services. The relocation of the Saikyo Line platform required minimal service suspension only for 2 days.

New Line Development Over Existing Line

The Ueno-Tokyo Line construction project involved constructing a new conventional line in the narrow construction space of central Tokyo. This transportation improvement project aimed to open a new through operation route on the trunk line connecting the north and south of the metropolitan region. The construction of the new line contributed to easing passenger congestion, reducing travel time and strengthening the railway network. In some sections, JR East effectively completed the highly challenging task of constructing new viaducts over the existing railway lines while they were still in service.

Expansion of the Busiest Station

Shinjuku Station is one of the world's busiest terminal stations, with 3 million passengers passing through daily. To improve the station’s pedestrian circulation and public transportation node function, JR East implemented a project to install a public concourse under the 8-platform and 16-track station to connect the east and west sides of the station. In addition, an artificial ground was constructed over the railway tracks. Our advanced project management has sustained socio-economic activities without interruption, while ensuring the daily safety and stability of our railway operations.