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Daido Signal Co., Ltd.

6743Standard MarketElectric Appliances

大同信号株式会社 logo
Daido Signal Co., Ltd.6743

Railway Signaling Business

The core segment of the Daido Signal Group, responsible for the manufacturing, sale, and installation of railway signaling safety equipment.

PeriodCurrentPreviousChange
Segment sales¥23,958 million¥20,342 million
Segment profit¥3,735 million¥2,573 million
Orders received¥24,337 million¥22,148 million
Segment assets¥30,450 million¥27,285 million
Segment profit margin15.6%12.6%

Business Details

Daido Signal Co., Ltd. and its subsidiaries manufacture, sell, and install railway signaling safety equipment. Major customers include East Japan Railway Company and other railway operators. The segment consists of two pillars: system products such as Electronic Interlocking Systems / ATC Systems, and Field Products such as Track Circuit Devices / Centralized Monitoring Systems, and is the core business accounting for approximately 93% of consolidated net sales. A stable order environment has continued, supported by inbound demand and investment to renew aging equipment.

Recent Overview

Sales increased 17.8% due to growth in ATC and field products, with segment profit up sharply by 45.1%.

In the Railway Signaling Business for FY2026 (ending March 2026), an increase in system products such as ATC and Electronic Interlocking Systems and field products such as ATS resulted in sales of ¥23,958 million (up ¥3,615 million, or 17.8%, year on year) and segment profit of ¥3,735 million (up ¥1,161 million, or 45.1%, year on year). Orders received totaled ¥24,337 million (up ¥2,190 million, or 9.9%, year on year). The company also achieved its first SIL4 certification under IEC62279 for overseas markets, completed final operational verification of a virtualized PRC device, completed development of a radio-based railway crossing control device using GNSS, and secured its first contract for the Package Relay Interlocking System.

Key Products

product
Electronic Interlocking Systems / ATC Systems

System products including ATC (Automatic Train Control) and Electronic Interlocking Systems. In FY2026 (ending March 2026), sales increased, contributing to sales growth. The company obtained its first SIL4 certification under the international standard IEC62279 (software) in preparation for overseas expansion.

product
Track Circuit Devices / Centralized Monitoring Systems (Field Products)

Field Products including ATS (Automatic Train Stop) and Track Circuit Devices. In FY2026 (ending March 2026), while orders for system products decreased, orders for field products such as track circuits exceeded the prior year, contributing to an increase in overall orders.

product
Train Detection Devices (Axle Counters)

Field tests continued in FY2026 (ending March 2026). Release is planned for the next fiscal year (FY2027, ending March 2027), positioning the product as a response to labor-saving and workforce-reduction needs.

service
AI Maintenance Support Service (Track Relay Voltage Anomaly Prediction)

Development and patent application were carried out for a track relay voltage anomaly prediction function utilizing AI technology. This is a maintenance support service that addresses the digitalization and labor-saving needs of railway facilities.

product
Radio-Based Train Control System (for Regional Lines)

Field tests are scheduled to begin from June 2026. Development is being advanced as a new product that contributes to equipment streamlining and cost reduction on regional lines. This is part of growth investment toward the next medium-term management plan, "PLAN2029."

product
Package Relay Interlocking System

The first contract was secured in FY2026 (ending March 2026). As a package product that achieves significant reductions in construction period and cost through specification standardization, it addresses railway operators' cost-reduction needs.

service
Installation and Maintenance of Railway Signaling Safety Equipment

Recognized as goods transferred over a certain period (percentage-of-completion method). Revenue from this category in FY2026 (ending March 2026) increased significantly to ¥10,147 million (from ¥7,366 million in the prior period), becoming a major factor in sales growth.

Growth Drivers

  • A stable order environment for railway operators' capital investment and maintenance/renewal expenditures, supported by steady railway passenger demand (continued inbound and leisure demand)
  • Continued demand for renewal of aging equipment and ongoing capital and repair investment premised on stable transportation (maintaining a certain level within the railway industry)
  • Growing investment needs for digitalization and labor-saving of railway facilities, including signaling and safety equipment
  • Addressing labor-saving and workforce-reduction needs through the release of new products such as axle counters and compact digital time-element relays
  • Development of new markets through advancement of the radio-based train control device for regional lines (field tests scheduled to begin June 2026)
  • Expansion into overseas markets, leveraging the acquisition of IEC62279 SIL4 certification as a foothold
  • Improved sales stability due to a significant increase in sales recognized under the percentage-of-completion method (goods transferred over a certain period), which rose to ¥10,147 million in FY2026 (ending March 2026), up 37.7% year on year

Risks

  • Risk of fluctuations in raw material and energy prices (an uncertain procurement environment stemming from U.S. trade policy trends and the situation in the Middle East)
  • Risk related to procurement of components, primarily semiconductors (requires continued monitoring)
  • Risk of railway operators scaling back large-scale capital investment plans or reduced need for periodic renewal
  • Risk of sales concentration with specific customers, including East Japan Railway Company
  • Risk of labor shortages of engineers and construction personnel due to a declining working-age population
  • For the FY2027 (ending March 2027) forecast, Railway Signaling Business sales are projected at ¥24,000 million (down approximately 1.7% year on year), a slight decrease, reflecting a risk of a gap between large-scale projects

Last updated: June 23, 2026