Slippery roadGermany

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36. Slippery road

A slippery road has reduced tyre grip and can make steering, braking and acceleration less effective. Roads may become slippery because of rain, ice, snow, mud, oil, loose material or other substances on the surface. Drivers should reduce speed, increase their following distance and avoid sudden steering, braking or acceleration. Extra caution is needed in bends, on bridges and wherever the road surface changes unexpectedly.

Slippery road
Slippery-road warning sign beside a wet road. (Germany)
Wikimedia.org • Bjoern Schwarz • CC BY
What makes a road slippery?

A road can become slippery because of rain, ice, snow, mud, oil, loose material or other substances that reduce tyre grip.

How should you drive on a slippery road?

Reduce speed, increase your following distance and use smooth steering, braking and acceleration. Sudden movements can cause the tyres to lose grip.

Why does braking distance increase on a slippery road?

Reduced tyre grip means the tyres cannot generate as much braking force, so the vehicle may need a longer distance to slow down or stop.

Can a road be slippery even when it looks dry?

Yes. Oil, dust, loose material or a thin layer of ice can reduce grip even when the road does not appear obviously wet or slippery.

Are bends more dangerous on slippery roads?

Yes. Turning requires tyre grip, so a slippery surface can make it easier for the vehicle to skid or leave its intended path, especially at higher speeds.

What should you do if your vehicle starts to skid?

Stay calm and avoid sudden braking or steering. Make smooth corrections and allow the tyres to regain grip. The correct response can depend on the vehicle and its safety systems.

1 Germany 2 Motorway 3 Expressway 4 Residential area 5 Zone 6 Speed limit 7 Footpath 8 Bike path 9 Shared-use path 10 Pedestrian warning 11 Tunnel 12 Bridge 13 Cycling street 14 Pedestrian zone 15 Toll road 16 Customs 17 One-way traffic 18 Quay 19 Slope 20 Bus lane 21 Bus stop 22 Dead end 23 Stop sign 24 Give way 25 Roundabout 26 Priority road 27 Road narrowing 28 Priority over oncoming traffic 29 Give way to oncoming traffic 30 Pedestrian crossing 31 Railway crossing 32 Mandatory direction 33 School area 34 Overtaking 35 Crossing animals 36 Slippery road 37 Rockfall 38 Aircraft 39 Curve 40 Chevron 41 Wrong-way driving 42 Roadworks 43 Crosswind 44 Height limit 45 Width limit 46 Length limit 47 Weight limit 48 Radar speed sign 49 Selective barriers 50 Low-emission zone 51 Intersection direction sign 52 Priority at the next junction 53 Traffic lights 54 Traffic lights warning 55 Pedestrian lights 56 Road markings 57 Junction layout 58 Bike box 59 Speed feedback 60 Driving licence 61 Location marker 62 Countdown markers 63 Traffic mirror 64 Emergency telephone 65 International border 66 Pedestrian underpass 67 Cycling route 68 End of restriction 69 Parking 70 No parking 71 No stopping 72 Parallel parking 73 Park and ride 74 Kiss and ride 75 Parking meter 76 Parking disc 77 Disabled parking 78 Traffic management 79 Reversing 80 Traffic jam 81 Detour 82 Uncontrolled crossroad 83 Road surface 84 Exit 85 Horse riding 86 Provisional licence 87 Hazardous cargo 88 Emergency exit 89 Runaway truck ramp 90 Oversize load 91 Cycle highway 92 Carsharing 93 City limit 94 Gantry 95 Distance board 96 Breakdown bay 97 Hiking 98 Pavement parking 99 Road church 100 Tourist attraction ...