CurveJapan
30. Curve
A curve is a section of road that changes direction to the left or right. A sharp, unexpected or poorly visible curve can reduce a driver’s view of approaching traffic, stopped vehicles, pedestrians and other hazards.
Drivers should reduce speed before entering the curve, remain within their lane and use smooth steering, braking and acceleration. Warning signs may indicate the direction of the first curve or a series of successive curves.
Wikimedia.org • Kugel • CC BY-SA
What makes a bend dangerous in Japan?
A bend can shorten the visible road and reduce the margin for correcting an error. Slow before entering and maintain control within the distance you can see to be clear. Grip, camber, traffic and hidden road users can require a speed well below the posted maximum.
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 npa.go.jp • NPA — Traffic Lights and Road Signs, official English definitions
🔗 npa.go.jp • NPA — traffic instruction handbook, sign groups and road use; read with current Act
How should you approach a sharp curve in Japan?
Slow down before the bend, select the correct lane position, look through the curve and steer smoothly. Keep enough grip and visible stopping distance for the road and weather conditions.
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 npa.go.jp • NPA — Traffic Lights and Road Signs, official English definitions
🔗 npa.go.jp • NPA — traffic instruction handbook, sign groups and road use; read with current Act
Is overtaking safe on a blind bend in Japan?
No. Do not start overtaking where your view of oncoming traffic is obstructed or where signs or road markings prohibit it. Wait until there is a lawful, clear and sufficiently long view ahead.
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 npa.go.jp • NPA — Traffic Lights and Road Signs, official English definitions
🔗 npa.go.jp • NPA — traffic instruction handbook, sign groups and road use; read with current Act
Warning for a curve to the left.
English • Traffic sign 202 • Left-hand bend. Adjust speed before entering.
日本語 • 202 • 左方屈曲あり。 この先に左カーブがあります。カーブに入る前に速度を調整してください。
Sources
🔗 Commons.wikimedia.org
🔗 Laws.e-gov.go.jp • 道路標識、区画線及び道路標示に関する命令、別表第一・第二
🔗 Mlit.go.jp • 国土交通省、道路標識一覧
SVG source: Monaneko • Public domain • Original revision 2013-06-20. Wikimedia original unmodified.

Traffic rules
Japan