Japan Transportation Technology (Thailand) Co., Ltd. (JTT) was established on December 9th, 2013 as a joint venture between East Japan Railway Company (JR-EAST), Marubeni Corporation, and Toshiba Corporation. We bring over a century of proven Japanese railway expertise, combined with a decade of local experience, to provide top-tier maintenance services for railway system in Thailand and beyond.
Our first major project is the maintenance of Bangkok’s MRT Purple Line, a state-of-the-art railway system supplied by Marubeni-Toshiba Joint Venture (MTJV).
Our 10-year maintenance contract, which began on August 6th, 2016, covers comprehensive services for: Rolling Stock, Depot Workshop Equipment, Power Supply System, Trackwork, including maintenance supports. The contract is expected to be extended, reflecting our strong track record of reliability, safety, and high-quality service.
Building on this trust and strong reputation, JTT, in collaboration with JR-East, has also been invited to provide maintenance training for the State Railway of Thailand (SRT) for the KiHa 40/48 train series in November 2025.
Our Goals
- Deliver world-class railway system maintenance, ensuring passengers enjoy safe, reliable, and comfortable railway services through high-quality maintenance.
- Support the development of local public transportation system, combining Japanese and domestic technology and expertise to serve as a model for sustainable railway maintenance services.
Our Core Values
Safety First
- We always place the highest priority on passengers’ and employees’ safety, reinforced through meticulous checks and repeated confirmation.
High-Quality Maintenance
- Providing safe and reliable train operations requires superior maintenance standards, and we are committed to continual improvement and excellence.
Cost-Effective Maintenance
- We strive for efficiency and cost-effectiveness to ensure the stable management and sustainability of the company
Organizational Structure
Management Message
Welcome to the website of Japan Transportation Technology (Thailand) Co., Ltd. (JTT).
JTT is a railway maintenance company jointly owned by Marubeni Corporation, East Japan Railway Company (JR East) and Toshiba Corporation. Since 2013, based in Bangkok, we have combined Japanese railway know‑how with Thai capabilities to support safe, reliable and comfortable urban rail services.
Since the opening of the MRT Purple Line, JTT has been responsible for its comprehensive maintenance, covering rolling stock, depot and workshop equipment, power supply systems, trackwork and related functions. The line recorded zero train service failures in both 2023 and 2024, the best performance among Bangkok’s urban railways. This track record reflects disciplined field execution, structured maintenance engineering and close collaboration with our client and partners.
For railway operators and manufacturers, JTT offers:
- Operator‑oriented, risk‑based maintenance (RBM) focused on safety, service continuity and passenger impact
- Integrated maintenance across subsystems, with attention to life‑cycle cost and asset longevity
- Management systems aligned with ISO 9001, ISO 45001 and ISO 14001, underpinned by 5S and Kaizen
- A culture shaped by “Simplicity and Fortitude” and traditional Japanese virtues – integrity, courage, respect and self‑discipline – shared by our Thai and Japanese teams
Looking ahead, we seek to apply this experience to urban rail and mass transit projects in Thailand and overseas. JTT is prepared to support long‑term maintenance contracts, maintenance engineering and planning, reliability and failure analysis, training and on‑site technical supervision (SV dispatch), and improvement program using data and digital tools.
We would welcome the opportunity to discuss how JTT can contribute to safe, reliable and cost‑effective railway operations as a trusted maintenance partner throughout the asset life cycle.
Mitsuru Tanino
President
Japan Transportation Technology (Thailand) Co., Ltd.
Safety terms
Zero Accidents Award 2023 ,the annual consecutive achievement given by Ministry of Labor’s
In our company, safety is our top priority. We take pride in the fact that we’ve been recognized by the Ministry of Labor with the campaign of Zero Accident Award. This recognition reflects our commitment to safety and the steps we’ve taken to reduce accidents caused by strong Safety activity plan as well as the aim of preventing human error through daily Kiken Yochi Training (KYT) and lessons learned.
What is KYT
KYT is a way of thinking about safety that we use every day. It helps us identify and fix possible problems before they lead to accidents. We’ve made KYT part of our daily routine, and it’s something that everyone in our company practices.
A big part of our success in reducing accidents is making sure that knowledge and good practices are passed from experienced employees to new ones. This way, we don’t lose the wisdom that comes from experience.
What we do every day
We’re committed to keeping our employees safe. Here’s what we do every day to make it happen;
Spotting Hazards: We encourage all employees to report anything they see that might be dangerous, no matter how small. This open reporting system helps us all keep an eye on safety.
Finding Solutions: When we report a potential problem, we work together to figure out how to make things safer. We’re always looking for ways to avoid accidents.
Practice and Training: To make sure everyone remembers how to stay safe; we regularly practice and train for different situations. It’s like practicing for a sports game to get better.
Sharing What We’ve Learned: Superiors doesn’t keep their lessons learnt to themselves. They share what they’ve learned from their experiences with everyone in the team. That way, the new comer can all learn from their mistakes and make overall workplace even safer.
We’re committed to reducing incidents and accidents caused by human error. We do this by practicing safety every day through KYT and Lesson learning from our past experiences. It’s not just something we do at work; it’s a way of JTT’s Safety culture. With KYT and lessons learned, we’re working towards a safer and more successful future.
Certificate
ISO 9001:2015
For the following activities
The Provision of Maintenance Rolling Stock, Depot workshop equipment,
Track work and Power Supply System for MRT Purple Line Project.
This certificate is valid from 31 January 2026 until 30 January 2029 and remains valid subject to satisfactory surveillance audits.
Issue 5. Certified since 31 January 2017.