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Minimum speedJapan

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Traffic signs
Traffic rules
Japan

6. Minimum speed

A minimum speed is the lowest speed that vehicles are required to maintain on a particular road or under specified conditions. Minimum-speed rules are intended to prevent vehicles travelling unnecessarily slowly from disrupting traffic or creating large speed differences between road users.

A minimum speed does not require drivers to maintain that speed when traffic, weather, visibility, road conditions or safety require them to slow down. The way minimum speeds are indicated and enforced varies between countries.

Minimum speed
Minimum speed of 50 km/h. Speed limit of 40 km/h on the right. Start of an expressway. (Tokai, Japan)
Wikimedia.org • Oka21000 • CC BY-SA
What is a minimum speed?

A minimum speed is the lowest speed that vehicles are normally required to maintain on a particular road or in a specified traffic situation.

Must you maintain the minimum speed in dangerous conditions?

No. Safety takes priority. Drivers may need to travel more slowly because of congestion, poor weather, limited visibility, roadworks or another legitimate reason.

Why are minimum speeds used?

Minimum speeds can help reduce excessive differences in speed between vehicles and prevent unnecessarily slow traffic from obstructing normal traffic flow.

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 ...