Unless the following paragraph applies, it is prohibited for the driver of either a vehicle or streetcar, these being classed separately as set forth in each of the following items, to obstruct the progress of another vehicle or streetcar as set forth in the item at an uncontrolled intersection:
a vehicle must not obstruct the progress of:vehicles approaching from the left on a road intersecting the road on which the vehicle is proceeding (hereinafter referred to as an "intersecting road") and streetcars proceeding down an intersecting road;
a streetcar must not obstruct the progress of:streetcars approaching from the left on an intersecting road.
At an uncontrolled intersection, a vehicle or streetcar must not obstruct the progress of other vehicles and streetcars traveling on an intersecting road that constitutes a priority road (meaning a road designated as such by road signs or markings, or a road at whose intersections a center line or vehicle traffic lanes have been established by road signs or markings in order to regulate the movement of vehicles on the road; the same applies hereinafter) or of other vehicles and streetcars traveling on an intersecting road that is clearly wider than the road on which the first vehicle or streetcar is traveling, unless the road on which the first vehicle or streetcar is traveling is also a priority road.
Before entering an uncontrolled intersection, the driver of a vehicle or streetcar (other than a vehicle or streetcar traveling on a priority road) must drive at reduced speed if the intersecting road is a priority road or is clearly wider than the road on which that vehicle or streetcar is proceeding.
Before entering an intersection and when traveling through it, the driver of a vehicle or streetcar must pay particular attention to vehicles and streetcars traveling on intersecting roads, vehicles and streetcars approaching from the opposite direction and turning right, and pedestrians crossing the road at or in the immediate vicinity of the intersection, and must proceed at the safest possible speed and in the safest possible manner, in keeping with the conditions at the intersection.
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(Interacting with Other Vehicles and Streetcars at Intersections)
At an uncontrolled intersection, a vehicle or streetcar must not obstruct the progress of other vehicles and streetcars traveling on an intersecting road that constitutes a priority road…
車両等は、交通整理の行なわれていない交差点においては、その通行している道路が優先道路（道路標識等により優先道路として指定されているもの及び当該交差点において当該道路における車両の通行を規制する道路標識等による中央線又は車両通行帯が設けられている道路をいう。以下同じ。）である場合を除き、交差道路が優先道路であるとき…
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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
road sign or markingmachine translation
「道路標識等」
A road sign (道路標識) or a road marking (道路標示).
Short name set inArticle 2, paragraph (1), item (iv)
intersection
「交差点」
The part where two or more roads meet at a crossroads, T-junction or other junction; where a road has separate sidewalks and roadway, the part where the roadways meet.
Defined inArticle 2, paragraph (1), item (v)· 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
streetcar
「路面電車」
A vehicle that runs on rails.
Defined inArticle 2, paragraph (1), item (xiii)· 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)
driving at reduced speed
「徐行」
A vehicle or streetcar (車両等) moving at a speed at which it can stop immediately.
Defined inArticle 2, paragraph (1), item (xx)· applies throughout the law
obstructing progress
「進行妨害」
Continuing or starting to move when doing so may force another vehicle or streetcar to change its speed or direction suddenly to avoid danger.
Defined inArticle 2, paragraph (1), item (xxii)· applies throughout the law
intersecting road
「交差道路」
A road that crosses the road a vehicle is travelling on.
Short name set inArticle 36, paragraph (1), item (i)
priority road
「優先道路」
A road designated as a priority road by road signs or markings (道路標識等), or a road on which, at the intersection in question, road signs or markings regulating its traffic set a center line or vehicle traffic lanes.
Defined inArticle 36, paragraph (2)