Article 71-4Rules to Be Observed by Riders of Large Two-Wheeled Vehicles and Other Vehicles
第七十一条の四（大型自動二輪車等の運転者の遵守事項）
A person riding a standard or large motorcycle must not ride that vehicle without wearing a motorcycle helmet, and must not carry a passenger who is not wearing a motorcycle helmet.
A person riding a general motorized bicycle must not ride that vehicle without wearing a motorcycle helmet.
The driver of a specified small motorized bicycle must endeavor to wear a motorcycle helmet.
特定小型原動機付自転車の運転者は、乗車用ヘルメットをかぶるよう努めなければならない。
A person holding a large motorcycle license as referred to in Article 84, paragraph (3) who is under 20 years of age or who has not held that license for at least three years in total (not counting any period during which it was suspended) (other than a person currently holding a standard motorcycle license as referred to in that paragraph who has held that license for at least three years in total (not counting any period during which the person's license was suspended) and other persons that Cabinet Order prescribes) must not carry a passenger while driving a standard or large motorcycle (other than one with a sidecar; the same applies hereinafter in this Article) on a national expressway or limited highway.
第八十四条第三項の大型自動二輪車免許を受けた者で、二十歳に満たないもの又は当該大型自動二輪車免許を受けていた期間（当該免許の効力が停止されていた期間を除く。）が通算して三年に達しないもの（同項の普通自動二輪車免許を現に受けており、かつ、当該普通自動二輪車免許を受けていた期間（当該免許の効力が停止されていた期間を除く。）が通算して三年以上である者その他の者で政令で定めるものを除く。）は、高速自動車国道及び自動車専用道路においては、運転者以外の者を乗車させて大型自動二輪車（側車付きのものを除く。以下この条において同じ。）又は普通自動二輪車（側車付きのものを除く。以下この条において同じ。）を運転してはならない。
A person holding a standard motorcycle license as referred to in Article 84, paragraph (3) (other than a person also holding a large motorcycle license as referred to in that paragraph) who is under 20 years of age or who has not held that license for at least three years in total (not counting any period during which the person's license was suspended) (other than a person who has held a standard motorcycle license at some point within the six months before the day on which the person came to hold the current license and other persons that Cabinet Order prescribes) must not carry a passenger while driving a standard motorcycle on a national expressway or limited highway.
A person holding a large motorcycle license as referred to in Article 84, paragraph (3) who has not held that license for at least one year in total (not counting any period during which the person's license was suspended) (other than a person currently holding a standard motorcycle license as referred to in that paragraph who has held that license for at least one year in total (not counting any period during which the person's license was suspended) and other persons that Cabinet Order prescribes) must not carry a passenger while driving a standard or large motorcycle.
A person holding a standard motorcycle license as referred to in Article 84, paragraph (3) (other than a person also holding a large motorcycle license as referred to in that paragraph) who has not held that license for at least one year in total (not counting any period during which the person's license was suspended) (other than a person who has held a standard motorcycle license at some point within the six months before the day on which the person came to hold the current license and other persons that Cabinet Order prescribes) must not carry a passenger while driving a standard motorcycle.
Cabinet Office Order provides for the standards for motorcycle helmets as referred to in paragraphs (1) and (2).
Read this with the articles around it
(Rules to Be Observed by Riders of Large Two-Wheeled Vehicles and Other Vehicles)
A person riding a standard or large motorcycle must not ride that vehicle without wearing a motorcycle helmet, and must not carry a passenger who is not wearing a motorcycle helmet.
大型自動二輪車又は普通自動二輪車の運転者は、乗車用ヘルメットをかぶらないで大型自動二輪車若しくは普通自動二輪車を運転し、又は乗車用ヘルメットをかぶらない者を乗車させて大型自動二輪車若しくは普通自動二輪車を運転してはならない。
Open this provision(Rules to Be Observed by Riders of Large Two-Wheeled Vehicles and Other Vehicles)
A person riding a standard or large motorcycle must not ride that vehicle without wearing a motorcycle helmet, and must not carry a passenger who is not wearing a motorcycle helmet.
大型自動二輪車又は普通自動二輪車の運転者は、乗車用ヘルメットをかぶらないで大型自動二輪車若しくは普通自動二輪車を運転し、又は乗車用ヘルメットをかぶらない者を乗車させて大型自動二輪車若しくは普通自動二輪車を運転してはならない。
Open this provision(Rules to Be Observed by Riders of Large Two-Wheeled Vehicles and Other Vehicles)
A person riding a general motorized bicycle must not ride that vehicle without wearing a motorcycle helmet.
一般原動機付自転車の運転者は、乗車用ヘルメットをかぶらないで一般原動機付自転車を運転してはならない。
Open this provision(Driver's Licenses)
Class 1 licenses are classified into 10 categories: large motor vehicle licenses (hereinafter referred to as "L-MVL"); mid-sized motor vehicle licenses (hereinafter referred to as "M-MVL")…
第一種免許を分けて、大型自動車免許（以下「大型免許」という。）、中型自動車免許（以下「中型免許」という。）、準中型自動車免許（以下「準中型免許」という。）、普通自動車免許（以下「普通免許」という。）、大型特殊自動車免許（以下「大型特殊免許」という。）、大型自動二輪車免許（以下「大型二輪免許」という。）…
Open this provisionlimited highwaymachine translation
「自動車専用道路」
A limited highway as defined in Article 48-4 of the Road Act: a road or part of a road that its road administrator (道路管理者) has designated under Article 48-2 of that Act for general traffic by motor vehicles only.
Defined inArticle 2, paragraph (1), item (iii-2)
national expresswaymachine translation
「高速自動車国道」
A national expressway as defined in Article 4, paragraph (1) of the National Highway Act: a road for high-speed motor vehicle traffic that forms a key part of the national motorway network, whose route a Cabinet Order (政令) designates.
Defined inArticle 2, paragraph (1), item (iii-2)
drivingmachine translation
「運転」
Using a vehicle or streetcar on a road as it is meant to be used, including moving a motor vehicle or motorized bicycle by pedals or other human-powered gear it has besides its motor, but not specified automated operation (特定自動運行).
Defined inArticle 2, paragraph (1), item (xvii)· applies throughout the law
drivermachine translation
「運転者」
The person driving a vehicle or streetcar (車両等).
Short name set inArticle 2, paragraph (1), item (xviii)
specified small motorized bicyclemachine translation
「特定小型原動機付自転車」
A motorized bicycle (原動機付自転車) of the kind in Article 2, paragraph (1), item (x)(b): one meeting a Cabinet Office Order (内閣府令) standard for vehicles whose body size and structure will not obstruct other vehicles on a bicycle path and which need no high skill to drive.
Defined inArticle 17, paragraph (3)
general motorized bicyclemachine translation
「一般原動機付自転車」
A motorized bicycle (原動機付自転車) of the kind in Article 2, paragraph (1), item (x)(a): one with an engine or motor no larger in total displacement or rated output than a Cabinet Office Order (内閣府令) sets, other than one meeting the standard in item (x)(b) for small vehicles that need no great skill to drive.
Defined inArticle 18, paragraph (1)