Enforcement record

Administrative Guidance against 小湊鉄道株式会社

小湊鉄道株式会社 (Railway Business Act)

This page is one enforcement record linked to a confirmed legal entity. Company-level Official Gazette notices, registry data, related-company signals, and other public records are collected on the company profile.

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Railway Business ActConfirmed entity match28 April 2026

Action type

Administrative Guidance

Law

Railway Business Act

Authority

Action date

28 April 2026

RegBase evidence report

Japanese public-record enforcement check

Saveable record of the confirmed target entity, regulator disclosure, source status, and review notes for internal compliance files.

Report ID: RB-EN-ENFORCEMENT-TETSUDO-JIGYOHO-X-202607110523
Generated at: 11 July 2026 at 14:23
Record URL: https://regbase.jp/en/enforcement/tetsudo-jigyoho-xiao-cou-tie-dao-20260428

1. Review Summary

Target entity	小湊鉄道株式会社	Corporate Number	8040001053928
Enforcement record	1 record	Other confirmed records for this company	5 records
Action date	28 April 2026	Authority
Law	Railway Business Act	Action type	Administrative Guidance
Source status	Original-source archive or viewer URL recorded

This report summarizes public Japanese government disclosure data held by RegBase. It is not a credit score, sanctions conclusion, legal opinion, or adverse-media determination. Confirm important decisions against the linked official Japanese source.

2. Target Entity

English display name	小湊鉄道株式会社
Original Japanese name	小湊鉄道株式会社
English-name source	Japanese original
Corporate Number	8040001053928
Company status	Active
Representative	Not recorded
Registered address	千葉県市原市
Industry / capital	Industry: 鉄道事業者 / Capital: -

3. Enforcement Record

Target name in disclosure	小湊鉄道株式会社
Authority	()
Law / action type	Railway Business Act / Administrative Guidance
Action / announcement date	Action: 28 April 2026 / Announcement: 24 June 2026
English summary	Between March 3 and March 5, 2026, the Kanto Transport Bureau conducted a safety audit of Kominato Railway Co., Ltd. Based on the audit results, the company was found to have unresolved issues related to track maintenance, notably significant elevation differences and inadequate drainage functions. Although the company had previously reported plans to address these issues by February 2026, progress was not as planned, and no measures had been taken to complete repairs or to develop necessary plans for drainage and ballast replenishment. The bureau instructed the company to formulate an appropriate repair plan that includes drainage improvements and ballast replenishment, and to coordinate with relevant local authorities as needed to ensure proper maintenance. The company was required to report on the measures implemented by July 28, 2026.
Original Japanese text	令和８年３月３日から３月５日まで、貴社に対して保安監査を実施したところであるが、監査の結果、改善を要する事項が認められたことから、下記の事項について、改善措置を講ずるよう指示する。講じた措置については、令和８年７月２８日までに報告されたい。記令和７年３月に実施した前回の保安監査における改善措置として、高低変位が著大となっている箇所については、令和８年２月までに順次整備すると報告を受けていたが、本社において計画どおり進捗していないことを把握しながら対策をとらず整備が完了していないこと、及び高低変位の改善に必要な排水機能の整備と道床補充等の計画が策定されていないことを確認した。よって、軌道の適切な保全を確実に行うため、軌道整備にあたり排水機能の整備や道床補充等の必要な措置を含めた適切な補修計画を策定すること。この補修計画策定及び軌道整備にあたっては、必要により関係自治体等と調整を行い、確実に整備を行うこと。以上【関東運輸局】
Official source	https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=tetudou&EID=search&no=250
Source archive	https://kiroku.today/a/3a8baff14dses8v9
Extraction / evidence timestamps	Extracted: 25 June 2026 at 01:41 / Evidence checked: 25 June 2026 at 01:41 / Archive captured: 25 June 2026 at 03:30

4. Business Location and Permit Details

Business location address	千葉県市原市
Legal articles	鉄道に関する技術上の基準を定める省令
Overview page	https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=tetudou&EID=search&no=250

5. Other Confirmed Records for This Company

1. 14 May 2025 Administrative Guidance

Company	小湊鉄道株式会社
Law	Railway Business Act
Summary	Between March 3 and March 5, 2025, a safety audit was conducted on Kominato Railway Co., Ltd. by the Chiba Prefectural Public Transportation Authority. The audit identified several areas requiring improvement, including inspection records, safety management systems, construction procedures for railway facilities, personnel training, and operational procedures. The authority has instructed the company to implement corrective measures and report on these actions by August 14, 2025. The guidance emphasizes establishing a system for regular verification of on-site operations, ensuring inspections are conducted and recorded properly, and reviewing safety regulations related to track maintenance, construction, personnel fitness, and operational procedures to ensure compliance with the Railway Business Act and related ministerial ordinances.
RegBase URL	https://regbase.jp/en/enforcement/tetsudo-jigyoho-xiao-cou-tie-dao-20250514

2. 14 May 2025 Administrative Guidance

Company	小湊鉄道株式会社
Law	Railway Business Act
Summary	Between March 3 and March 5, 2025, a safety audit was conducted on Kotobuki Railway Co., Ltd. by the Chiba Prefectural Public Safety Commission. The audit identified several areas requiring improvement, leading to the issuance of administrative guidance. The company is instructed to enhance its safety management system by establishing a structure that accurately monitors on-site conditions, regularly verifies operational status, and ensures the effectiveness of corrective actions. Specific issues include: (1) failure to record detailed tunnel inspections every 20 years as per standards; (2) discrepancies between inspection items and records for tunnel and electrical equipment; (3) inspections of long-distance track circuits, uninsulated circuits, operation telephones, and high-voltage switchgear not conducted within permissible periods; (4) inconsistencies in vehicle maintenance inspections and records; (5) lack of planned repairs based on track displacement inspections; (6) failure to follow procedures for new construction of box culverts under tracks; (7) inadequate staff training for train drivers, especially those involved in vehicle maintenance; (8) insufficient health and vision checks for staff operating trains; and (9) improper operational procedures during train dispatching. The company must report on the implementation of corrective measures by August 14, 2025.
RegBase URL	https://regbase.jp/en/enforcement/97e35ce0-32d2-462f-a1fc-ff10096bd675

3. 8 March 2024 Administrative Guidance

Company	小湊鉄道株式会社
Law	Railway Business Act
Summary	On January 15, 2024, Kotobito Railway Co., Ltd. reported that one of its train drivers (hereafter 'the driver') had operated a train without conducting the pre-operation alcohol test using an alcohol detector, with the test being falsely passed by another person. A safety audit was conducted on January 17, 2024, revealing the need for improvements. The company was instructed to verify the appropriateness of operational procedures, management, and training related to alcohol testing, investigate the root causes, and develop measures to prevent recurrence, ensuring the safety of railway transportation. The company was required to report on the measures taken by March 8, 2024. Specifically, it was confirmed that: 1. The driver repeatedly had alcohol tests replaced by a conductor during the driver’s absence from the station office. 2. On October 19, 2023, the driver turned off the alcohol detector during testing to avoid detection of alcohol, refused re-testing upon instruction, and the safety officer conducted a substitute test. The company was advised to reinforce safety awareness regarding alcohol consumption among staff, ensure compliance with laws and regulations, and establish a system for accurate on-site situation monitoring and management. Regular verification of operational practices and strengthening of safety management systems were also mandated. Additionally, the guidance referenced the interpretation standards for technical regulations related to railway operations, emphasizing the need for documented training and record-keeping for personnel directly involved in train operations. Failure to comply with these instructions or to improve safety management systems could result in orders to improve business operations under applicable laws, including the Railway Business Act and Administrative Procedure Law, if further violations occur. The guidance was issued by the Kanto Transport Bureau, with the legal basis being the Ministry of Land, Infrastructure, Transport and Tourism's Ordinance on Technical Standards for Railways.
RegBase URL	https://regbase.jp/en/enforcement/tetsudo-jigyoho-xiao-cou-tie-dao-20240308

4. 8 March 2024 Administrative Guidance

Company	小湊鉄道株式会社
Law	Railway Business Act
Summary	On January 15, 2024, Minato Railway Co., Ltd. (corporate number 8040001053928), based in Ichihara City, Chiba Prefecture, reported to the authorities that one of its drivers (hereafter 'the driver') had operated a train or vehicle without conducting alcohol tests using an alcohol detector before duty, and that another person had substituted for the test, falsely passing it. An audit was conducted on January 17, 2024, which identified issues requiring improvement. The company was instructed to verify the appropriateness of operational methods, implementation status, and management related to these issues, investigate the root causes including underlying factors, and develop measures to prevent recurrence, ensuring the safety of railway transportation. The company was also asked to report on the corrective actions by March 8, 2024. Specifically, it was confirmed that the driver had repeatedly allowed a conductor to substitute for alcohol testing using an alcohol detector while the station staff was away, and on October 19, 2023, the driver turned off the alcohol detector during testing to avoid detection of alcohol, refusing re-test instructions and instead having the safety officer conduct the test. The guidance emphasizes the need for thorough safety awareness regarding alcohol consumption, compliance with laws and regulations, and the establishment of a system for accurate on-site situation awareness, with regular verification and improvement. Furthermore, the guidance references the interpretation standards for technical regulations related to railways, specifically regarding the education and training of personnel directly involved in train operations ('operation personnel'). It was confirmed that the company’s implementation guidelines do not specify necessary details for training and record-keeping, and that records of training are not maintained, making management and verification difficult. The company is instructed to include these details in their implementation guidelines, maintain records, and properly manage the training process. Failure to comply with these instructions, or if safety management improvements are not confirmed, or if violations recur, may result in orders for business improvement based on relevant legal provisions, including the Railway Business Act Article 23 and the Administrative Procedure Act Article 35, which authorize such measures when safety or public interests are deemed to be hindered. This guidance was issued by the Kanto Transport Bureau.
RegBase URL	https://regbase.jp/en/enforcement/81dac9c7-8758-470c-8cec-2f5fca5c5fa2

5. 20 January 2023 Administrative Guidance

Company	小湊鉄道株式会社
Law	Railway Business Act
Summary	The guidance was issued after a safety audit of Kominato Railway Co., Ltd. (corporate number 8040001053928), conducted from October 19 to 21, 2022, identified multiple issues requiring improvement. The company is instructed to take corrective actions on the following points, including investigating root causes and preventing recurrence, with a report due by March 31, 2023: 1. Develop and implement an annual training plan for staff involved in train and vehicle operation, as previously reported but not executed. 2. Ensure proper facility maintenance, including timely track inspections, displacement and structure inspections within prescribed periods, and proper record-keeping of inspection results. 3. Conduct regular inspections of electrical safety equipment, including high-voltage cable insulation, within the designated periods. 4. Adhere to vehicle monthly inspection schedules, manage inspection data effectively, and verify inspection schedules and results. 5. Properly record and store inspection results for trolley cars, including outsourced inspections, and ensure management of inspection records. 6. Submit the driver qualification management report to authorities after conducting mental capacity tests on drivers, and establish understanding and proper reporting procedures. 7. Conduct comprehensive eye examinations for drivers, including those with corrective lenses, and verify their use during pre-duty checks, along with reviewing management systems for driver fitness testing. 8. Report organizational changes related to driver call procedures to authorities, including amendments to safety management regulations and operational standards, ensuring legal procedures are followed. The guidance emphasizes establishing systems for proper record-keeping, compliance with legal standards, and timely reporting to authorities to ensure safety and regulatory adherence.
RegBase URL	https://regbase.jp/en/enforcement/tetsudo-jigyoho-xiao-cou-tie-dao-20230120

Reviewer Notes

Reviewer		Team / company
Review purpose
Additional notes

□ Official source URL or archived source was checked.
□ Corporate Number, address, or other identifiers were reviewed to avoid confusing similarly named entities.
□ This document is understood as a public-record evidence file, not a credit decision or legal opinion.

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Action summary

Company: 小湊鉄道株式会社Japanese original
Original: 小湊鉄道株式会社
Corporate Number: 8040001053928
Entity match: Confirmed entity match95/100Machine checked
Normalized Japanese name matched to a company profile with Corporate Number
Matched by normalized Japanese company name to an enriched company profile with a Corporate Number.
Governing law: Railway Business Act
鉄道事業法
Action type: Administrative Guidance
行政指導
Action date: 28 April 2026
Issuing authority
Industry context: 鉄道事業者

Violation

Machine-translated summary — verify against original

Between March 3 and March 5, 2026, the Kanto Transport Bureau conducted a safety audit of Kominato Railway Co., Ltd. Based on the audit results, the company was found to have unresolved issues related to track maintenance, notably significant elevation differences and inadequate drainage functions. Although the company had previously reported plans to address these issues by February 2026, progress was not as planned, and no measures had been taken to complete repairs or to develop necessary plans for drainage and ballast replenishment. The bureau instructed the company to formulate an appropriate repair plan that includes drainage improvements and ballast replenishment, and to coordinate with relevant local authorities as needed to ensure proper maintenance. The company was required to report on the measures implemented by July 28, 2026.

Show original Japanese text

令和８年３月３日から３月５日まで、貴社に対して保安監査を実施したところであるが、監査の結果、改善を要する事項が認められたことから、下記の事項について、改善措置を講ずるよう指示する。講じた措置については、令和８年７月２８日までに報告されたい。記令和７年３月に実施した前回の保安監査における改善措置として、高低変位が著大となっている箇所については、令和８年２月までに順次整備すると報告を受けていたが、本社において計画どおり進捗していないことを把握しながら対策をとらず整備が完了していないこと、及び高低変位の改善に必要な排水機能の整備と道床補充等の計画が策定されていないことを確認した。よって、軌道の適切な保全を確実に行うため、軌道整備にあたり排水機能の整備や道床補充等の必要な措置を含めた適切な補修計画を策定すること。この補修計画策定及び軌道整備にあたっては、必要により関係自治体等と調整を行い、確実に整備を行うこと。以上【関東運輸局】

Business location and permit details

Business location address: 千葉県市原市
Legal articles: 鉄道に関する技術上の基準を定める省令
Overview page: https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=tetudou&EID=search&no=250

These fields are extracted from the original Japanese disclosure or linked overview pages when available.

Compliance context

Low-medium

Administrative guidance or supervision was publicly disclosed by the authority.

Japanese regulatory disclosure under Railway Business Act.

Use as a monitoring signal. Confirm details before treating it as a formal sanction.

This context is an operational aid for review workflows, not a credit opinion or legal conclusion.

Evidence pack

Original announcement (Japanese)Archived source snapshot

Extracted at: 2026-06-24T16:41:19.405+00:00
Evidence checked: 2026-06-24T16:41:19.405+00:00
Archive captured: 2026-06-24T18:30:36.864+00:00

Show audit JSON

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    "law": {
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    "method": "normalized_name_with_corporate_number",
    "method_label": "Normalized Japanese name matched to a company profile with Corporate Number",
    "notes": "Matched by normalized Japanese company name to an enriched company profile with a Corporate Number."
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  "review": {
    "status": "machine_reviewed",
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  "compliance_context": {
    "severity": "Low-medium",
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    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=tetudou&EID=search&no=250",
    "archiveUrl": "https://kiroku.today/view/3a8baff14dses8v9",
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    "extractedAt": "2026-06-24T16:41:19.405+00:00",
    "translatedAt": "2026-07-06T05:52:10.432+00:00",
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    "generatedAt": "2026-07-11T05:23:50.000Z"
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  "limitations": [
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    "English summaries are provided for reference. The original Japanese source is authoritative.",
    "Possible or unresolved entity matches should be manually verified before use in a decision."
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}

The original Japanese disclosure is the authoritative record. Use possible or unresolved matches only as leads for manual review.

Language

日本語版を見る (Japanese)

Company info

English name: 小湊鉄道株式会社 Japanese original
Japanese name: 小湊鉄道株式会社
Corporate Number: 8040001053928
Registered address: 千葉県市原市

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About this recordAggregated and translated from public Japanese government disclosures. The English text is for reference only — authoritative content is the linked Japanese source.