SlopeGermany

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19. Slope

A slope is a section of road that rises or descends noticeably. A steep slope can affect vehicle speed, braking distance, traction, visibility and the ability of heavy or low-powered vehicles to maintain a steady speed.

Warning signs may indicate a steep ascent or dangerous descent and may show the gradient as a percentage. Drivers should adjust their speed early, select a suitable gear and remain prepared for slow vehicles, bends and changing road conditions.

Steep descent warning sign indicating a 20% gradient. (Albstadt-Laufen, Germany)
Wikimedia.org • LepoRello • CC BY-SA
What is a road slope?

A road slope is a section of road that rises or descends over a particular distance. It may also be called a gradient, incline or decline.

How can you recognise a steep slope?

A steep slope may be indicated by a warning sign showing an ascending or descending road. The sign may also display the gradient as a percentage.

What does a gradient of 10% mean?

A gradient of 10% means that the road rises or falls approximately 10 metres for every 100 metres travelled horizontally. It does not mean that the road is inclined at 10 degrees.

What is the difference between an ascent and a descent?

An ascent rises in the direction of travel, while a descent falls in the direction of travel. The same section of road is therefore an ascent in one direction and a descent in the other.

Does a slope warning sign impose a speed limit?

Not normally. It warns of a hazard rather than setting a numerical limit. Drivers must still respect the applicable speed limit and reduce their speed further when necessary.

How should you approach a steep descent?

Reduce speed before the descent, select a suitable gear and maintain a safe following distance. Avoid allowing the vehicle to gain excessive speed.

Which gear should you use when descending?

Use a gear that provides sufficient engine braking and helps keep the vehicle at a controlled speed. The appropriate gear depends on the vehicle, gradient and road conditions.

Should you coast downhill in neutral?

No. Coasting reduces engine braking and may make it harder to control the vehicle’s speed. Keep the transmission engaged while descending.

Why should you avoid continuous heavy braking?

Continuous braking on a long descent can cause the brakes to become excessively hot and lose effectiveness. Select a suitable gear, control speed early and use the brakes progressively when needed.

What is brake fade?

Brake fade is a reduction in braking performance caused by excessive heat. It can occur when the brakes are used continuously during a long or steep descent.

How should you drive uphill?

Select a suitable gear before the engine begins to struggle and maintain a steady speed where possible. Be prepared for heavy or low-powered vehicles travelling slowly ahead.

May a vehicle lose speed on a steep ascent?

Yes. Heavy vehicles, vehicles towing trailers and low-powered vehicles may slow considerably. Other drivers should maintain a safe distance and avoid impatient manoeuvres.

May you overtake near the top of a slope?

Do not overtake when the crest prevents you from seeing far enough ahead. Overtaking near a hilltop may also be expressly prohibited by local law, signs or road markings.

Why is visibility limited near the crest of a slope?

The road surface itself may hide approaching traffic, stopped vehicles, pedestrians or other hazards beyond the crest.

Who has priority on a narrow slope?

Some countries give priority to uphill traffic, while others rely on signs or ordinary obstruction rules. Drivers must follow local law and cooperate when passing is difficult.

How should you meet another vehicle on a narrow slope?

Reduce speed and use a passing place where available. The driver who can reverse or move aside more safely should cooperate, subject to any applicable priority signs or local rules.

How do rain, snow or ice affect a slope?

They reduce traction and make acceleration, braking and steering more difficult. Increase the following distance, use smooth controls and reduce speed before entering the slope.

Why are cyclists vulnerable on slopes?

Cyclists may travel slowly and move less steadily when climbing, while they may reach high speeds when descending. Drivers should leave sufficient space and avoid overtaking without a clear view.

How should you park on a slope?

Use the parking brake, select the appropriate gear or parking position and follow local rules concerning wheel position. Make sure the vehicle cannot roll into traffic.

Can a slope affect towing?

Yes. A trailer increases the load on the engine and brakes and may affect stability. Drivers should use a suitable gear, maintain additional distance and avoid excessive speed.

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 ...