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Difficulty
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Importance
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Description
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SG 1
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Very easy to be traversed mountain route, even for beginners.
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- normal lane width of at least 6 m, good asphalt or concrete
- through existing border security
- no tight bends, at most a few, widely diversified Return
- Gradients up to max. 9 %
- suitable for all types of passenger cars
- suitable for all types of motorcycles
- suitable for all types of bikes with mountain-compatible circuit
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SG 2
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Easily navigated route without significant requirements, also of mainly mountain unfamiliar.
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- dual carriageway, mostly asphalted
- Böcker largely available, traffic equitable pipeline route
- sufficiently wide bends with a barely noticeable slope in the inserts
- Gradients up to max. 15 %
- suitable for all types of passenger cars
- suitable for all types of motorcycles
- suitable for all types of bikes with mountain-compatible circuit
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SG 3
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Route requires practice and safe driving techniques on mountain roads.
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- mainly just two lanes, one lane sections with Dodge
- partially or completely missing asphalt, bad condition
- Border security lacking for the most part
- many, strongly curved corners, tight corners with greater slope
- over long distances more than 15 % slope
- limited passable for sports cars
- for cars with trailers (caravans particular) and trucks of over 3.5t total weight is no longer suitable and mostly forbidden by appropriate signage
- limited navigable for sport bikes
- for road bikes usually unsuitable, at best possible with wider tires, adapted circuit at steep inclines
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SG 4
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Also for mountain Familiar difficult course, requires a far above the average outstanding driving skills.
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- mostly single track, a few passing places
- hardly maintained road; z. T. rough gravel, heavily washed out or retracted, crossfalls possible is slippery when wet (mud, grass), possibly through narrow landslide, passable fords
- except for a few dangerous places no edge protection
- very tight, not developed sweeping, Reversierzwang for midsize cars
- steep climbs, z. T. in heights with thin air (about 2000 m)
- recommended for SUVs, coarse tread
- for bikes, restricted nor recommended for touring bikes with sufficient ground clearance, coarse tread
- for mountain bikes, restricted or, recommended coarse tread for trekking and travel wheels, adapted circuit at steep inclines
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SG 5
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Very difficult and dangerous route, use at your own risk!
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- barely existing roadway, on the border area
- barely discernible trail maintenance, rough gravel, bare rock, sand, mud; dangerous narrowings, high risk of rock falls, strong erosion, landslide and lateral inclination, temporarily (weather, depending on the season) impassable fords
- completely unsecured side edges, also on both sides exposed ridge lines, heavily exposed
- not always recognizable route
- extreme slopes, even at altitudes above 2000 m
- on grounds professionals with appropriate vehicles
- only all-wheel-driven car with high ground clearance and adapted tires
- only bikes and dirt bikes, with serious misgivings possibly Reiseenduros, long suspension travel, ground clearance and adapted tires
- adjusted only mountain bikes, custom tires, switch on steep gradients
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