PendienteMundial

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24. Pendiente

Una pendiente es un tramo de carretera que asciende o desciende de forma notable. Las pendientes pronunciadas pueden afectar la aceleración, la frenada, la selección de marchas y la distancia necesaria para detener el vehículo.

En descensos largos o pronunciados, los conductores deben seleccionar una marcha adecuada y evitar depender continuamente de los frenos de servicio, ya que pueden sobrecalentarse. En carreteras estrechas de montaña pueden aplicarse normas especiales de prioridad entre vehículos que ascienden y descienden.

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 Mundial 2 Autopista 3 Vía rápida 4 Zona residencial 5 Zona urbana 6 Zona 7 Límite de velocidad 8 Velocidad mínima 9 Velocidad recomendada 10 Senda peatonal 11 Carril bici 12 Vía compartida 13 Vía separada 14 Advertencia de peatones 15 Túnel 16 Puente 17 Calle ciclista 18 Zona peatonal 19 Resalto 20 Carretera de peaje 21 Aduana 22 Sentido único 23 Muelle 24 Pendiente 25 Carril bus 26 Parada de autobús 27 Calle sin salida 28 Señal de STOP 29 Ceda el paso 30 Glorieta 31 Vía con prioridad 32 Estrechamiento de calzada 33 Prioridad sobre el tráfico en sentido contrario 34 Ceda el paso al tráfico en sentido contrario 35 Paso de peatones 36 Paso a nivel 37 Dirección obligatoria 38 Prohibición de giro 39 Zona escolar 40 Adelantamiento 41 Cruce de animales 42 Calzada deslizante 43 Desprendimiento de rocas 44 Aeronaves 45 Curva 46 Panel direccional 47 Circulación en sentido contrario 48 Obras 49 Viento lateral 50 Límite de altura 51 Límite de anchura 52 Límite de longitud 53 Límite de peso 54 Señal de control de velocidad 55 Barreras selectivas 56 Zona de bajas emisiones 57 Señal de dirección en intersección 58 Prioridad en la próxima intersección 59 Semáforos 60 Advertencia de semáforos 61 Semáforos peatonales 62 Marcas viales 63 STOP en todos los accesos 64 Esquema de intersección 65 Carril para vehículos lentos 66 Zona avanzada para bicicletas 67 Circulación por la izquierda 68 Indicador de velocidad 69 Permiso de conducir 70 Marcador de ubicación 71 Número de carretera 72 Paneles de aproximación 73 Aseos públicos 74 Área de descanso 75 Espejo de tráfico 76 Teléfono de emergencia 77 Frontera internacional 78 Paso inferior peatonal 79 Ruta ciclista 80 Fin de restricción 81 Estacionamiento 82 Prohibido estacionar 83 Prohibido parar 84 Estacionamiento en línea 85 Aparcamiento disuasorio 86 Kiss and Ride 87 Estacionamiento alterno 88 Parquímetro 89 Disco de estacionamiento 90 Estacionamiento para personas con discapacidad 91 Gestión del tráfico 92 Incorporación 93 Marcha atrás 94 Cambio de sentido 95 Viaje compartido 96 Atasco 97 Desvío 98 Intersección sin regulación 99 Estado de la calzada 100 Banda sugerida para bicicletas ...