CurveJapan

An introduction to the traffic rules and road signs of Japan. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.


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.

Curve
Warning for a curve to the right over 120 metres. (Okinawa, Japan)
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 • Japan Road Traffic Act — Articles 7–9, 17–43, 44–45 and 70: actual controls and safe circulation

🔗 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 • Japan Road Traffic Act — Articles 7–9, 17–43, 44–45 and 70: actual controls and safe circulation

🔗 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 • Japan Road Traffic Act — Articles 7–9, 17–43, 44–45 and 70: actual controls and safe circulation

🔗 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. 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.

1 Japan 2 Motorway 3 Expressway 4 Zone 5 Speed limit 6 Minimum speed 7 Footpath 8 Bike path 9 Shared-use path 10 Tunnel 11 Toll road 12 One-way traffic 13 Quay 14 Slope 15 Bus lane 16 Bus stop 17 Stop sign 18 Give way 19 Roundabout 20 Road narrowing 21 Pedestrian crossing 22 Railway crossing 23 Mandatory direction 24 Turn prohibition 25 School area 26 Overtaking 27 Crossing animals 28 Slippery road 29 Rockfall 30 Curve 31 Wrong-way driving 32 Roadworks 33 Crosswind 34 Height limit 35 Width limit 36 Weight limit 37 Radar speed sign 38 Selective barriers 39 Intersection direction sign 40 Traffic lights 41 Traffic lights warning 42 Pedestrian lights 43 Road markings 44 Driving licence 45 Location marker 46 Traffic mirror 47 Emergency telephone 48 Cycling route 49 Parking 50 No parking 51 No stopping 52 Disabled parking 53 Traffic management 54 Reversing 55 U-turn 56 Uncontrolled crossroad 57 Road surface 58 Provisional licence 59 Emergency exit 60 City limit 61 Horn 62 Licence plate 63 Charging station 64 Dangers 65 Pedestrian 66 Cyclist 67 Moped 68 Motorcycle 69 Car 70 Truck 71 Bus 72 Police 73 Ambulance 74 Pothole 75 Path 76 Particulates 77 Air pollution 78 Rush hour 79 Road code 80 Two-way traffic 81 Street gutter 82 Cargo bike 83 Forestry vehicle 84 Construction vehicle 85 Semi-trailer truck 86 Trolleybus 87 Speed pedelec 88 Delivery vehicle 89 Idling 90 Tow truck 91 Four-wheel drive 92 No vehicles 93 Bicycle 94 Motorcycle equipment 95 Tram 96 Rail track 97 Caravan 98 Trailer 99 Tow hitch 100 Fire truck ...