# 道路交通法 / Road Traffic Act — 第五十四条 (Article 54) - Law: 道路交通法 (Road Traffic Act), 昭和三十五年法律第百五号 - English title "Road Traffic Act": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第五十四条 (Article 54)（警音器の使用等） — address `art-54` - Text in force since: 2026-07-21 - URL (the page that opens at this provision): https://japanlaw.org/ja/road-traffic-act/art-54 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/335AC0000000105/art-54 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第五十四条（警音器の使用等） — (Using the Horn) caption: Ministry of Justice translation — Japanese Law Translation Database System art-54 · https://japanlaw.org/ja/road-traffic-act/art-54 · https://japanlaw.org/l/335AC0000000105/art-54 **第一項** 車両等（自転車以外の軽車両を除く。以下この条において同じ。）の運転者は、次の各号に掲げる場合においては、警音器を鳴らさなければならない。 art-54/par-1 · https://japanlaw.org/ja/road-traffic-act/art-54/par-1 · https://japanlaw.org/l/335AC0000000105/art-54/par-1 The driver of a vehicle or streetcar (other than a light road vehicle that is not a bicycle; the same applies hereinafter in this Article) must sound the horn: Ministry of Justice translation — Japanese Law Translation Database System **一** 左右の見とおしのきかない交差点、見とおしのきかない道路のまがりかど又は見とおしのきかない上り坂の頂上で道路標識等により指定された場所を通行しようとするとき。 art-54/par-1/item-1 · https://japanlaw.org/ja/road-traffic-act/art-54/par-1/item-1 · https://japanlaw.org/l/335AC0000000105/art-54/par-1/item-1 when about to proceed through a blind intersection, around a blind curve, or over a blind summit at a place designated by a road sign or marking; Ministry of Justice translation — Japanese Law Translation Database System **二** 山地部の道路その他曲折が多い道路について道路標識等により指定された区間における左右の見とおしのきかない交差点、見とおしのきかない道路のまがりかど又は見とおしのきかない上り坂の頂上を通行しようとするとき。 art-54/par-1/item-2 · https://japanlaw.org/ja/road-traffic-act/art-54/par-1/item-2 · https://japanlaw.org/l/335AC0000000105/art-54/par-1/item-2 when about to proceed through a blind intersection, around a blind curve, or over a blind summit when on a stretch of road designated by a road sign or marking as a mountain road or road with many curves. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 車両等の運転者は、法令の規定により警音器を鳴らさなければならないこととされている場合を除き、警音器を鳴らしてはならない。ただし、危険を防止するためやむを得ないときは、この限りでない。 art-54/par-2 · https://japanlaw.org/ja/road-traffic-act/art-54/par-2 · https://japanlaw.org/l/335AC0000000105/art-54/par-2 The driver of a vehicle or streetcar must not sound the horn unless required to do so pursuant to laws and regulations; provided, however, that this does not apply if sounding the horn is necessary in order to prevent a hazard. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-54/par-1: この条 → 道路交通法 第五十四条 (Article 54), art-54 — https://japanlaw.org/ja/road-traffic-act/art-54 · https://japanlaw.org/l/335AC0000000105/art-54 ## Cited by 4 provisions cite this one. No official source publishes this direction. - 道路交通法 第五十四条第一項（警音器の使用等） — https://japanlaw.org/ja/road-traffic-act/art-54/par-1 · https://japanlaw.org/l/335AC0000000105/art-54/par-1 - 道路交通法 第百十七条の二の二第一項第八号チ — https://japanlaw.org/ja/road-traffic-act/art-117-2-2/par-1/item-8/sub-8 · https://japanlaw.org/l/335AC0000000105/art-117-2-2/par-1/item-8/sub-8 - 道路交通法 第百二十条第一項第六号 — https://japanlaw.org/ja/road-traffic-act/art-120/par-1/item-6 · https://japanlaw.org/l/335AC0000000105/art-120/par-1/item-6 - 道路交通法 第百二十一条第一項第九号 — https://japanlaw.org/ja/road-traffic-act/art-121/par-1/item-9 · https://japanlaw.org/l/335AC0000000105/art-121/par-1/item-9 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 道路交通法 — the text in force from 2026-07-21 (https://laws.e-gov.go.jp/law/335AC0000000105/20260721_508AC0000000052), retrieved 2026-10-13 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Road Traffic Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/2962/tb), retrieved 2026-10-13 - This site's parser, version 190 — 道路交通法 — structure, counts, cross-references and defined terms, computed 2026-10-13