The driver of a vehicle must not change course if this would likely cause a sudden change of speed or direction by a vehicle or streetcar that is approaching from behind on the same course that the driver would be on after changing course.
Except in the following cases, when proceeding down a vehicle traffic lane demarcated with road markings to show that a change of course is prohibited for vehicles in that lane, the driver of a vehicle must not change course beyond where those road markings start:
when bringing the vehicle towards the left or right side of a road pursuant to Article 40 or if it is impossible to continue to proceed down the current vehicle traffic lane due to road damage, road work, or any other obstruction;
when attempting to proceed in compliance with Article 40, or when attempting to proceed in accordance with the provisions on traffic distribution in a vehicle traffic lane where the vehicle is unable to proceed due to road damage, road work, or any other obstruction.
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(Right of Way for Emergency Motor Vehicles)
When an emergency motor vehicle is approaching an intersection or its vicinity, streetcars must come to a stop and avoid entering the intersection, and vehicles…
交差点又はその附近において、緊急自動車が接近してきたときは、路面電車は交差点を避けて、車両（緊急自動車を除く。以下この条において同じ。）は交差点を避け、かつ、道路の左側（一方通行となつている道路においてその左側に寄ることが緊急自動車の通行を妨げることとなる場合にあつては、道路の右側。次項において同じ。）に寄つて一時停…
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「道路」
A road as defined in the Road Act, a motor vehicle road (自動車道) as defined in the Road Transportation Act, and any other place used for general traffic.
Defined inArticle 2, paragraph (1), item (i)· applies throughout the law
vehicle traffic lane
「車両通行帯」
Where road markings (道路標示) show that vehicles are to travel in set parts of a road, the part of the road those markings show.
Defined inArticle 2, paragraph (1), item (vii)· applies throughout the law
vehicle
「車両」
Motor vehicles (自動車), motorized bicycles (原動機付自転車), light road vehicles (軽車両) and trolleybuses (トロリーバス).
Defined inArticle 2, paragraph (1), item (viii)· applies throughout the law
road marking
「道路標示」
Lines, symbols or letters drawn on the road surface with road studs, paint, stones or the like, showing regulations or instructions on road traffic.
Defined inArticle 2, paragraph (1), item (xvi)· applies throughout the law
vehicle or streetcarmachine translation
「車両等」
A vehicle (車両) or a streetcar (路面電車).
Short name set inArticle 2, paragraph (1), item (xvii)