Denzel Alpine Road Scale

Draft : Denzel Alpine Road Scale based on https://de.wikipedia.org/wiki/Denzel-Alpenstra%C3%9Fen-Skala

Driving skill levels according to the Denzel Alpine Road Scale in the Großer Alpenstraßenführer (Big Alpine Road Guide) from the Denzel-Verlag. All listed pass and mountain roads, which also include old gravel roads and poorly preserved military routes, were divided into those levels. For the overall assessment, various factors such as route, pavement, width, margin, inclines and descent, absolute and relative altitude, etc. were used. The principally vehicle-independent scale comprises five basic grades SG 1 to SG 5 and four intermediate grades (for example SG 3-4).

Difficulty level	Meaning	Description
SG 1	Very easy to drive mountain route, also for beginners.	normal roadway width of at least 6 m, good asphalt or concrete continuous edge protection no tight bends, at most a few, wide bends Gradients up to max. 9% suitable for all car types suitable for all motorcycle types suitable for all types of bicycles with mountain suitable circuit
SG 2	Track without significant requirements, even easy to drive for people not used to alpine roads.	two-lane carriageway, mostly paved Margin protection largely available, traffic-correct route sufficiently wide turns with barely noticeable incline in the inserts Gradients up to max. 15% suitable for all car types suitable for all motorcycle types suitable for all types of bicycles with mountain suitable circuit
SG 3	Route requires practice and safe driving technique on mountain roads.	mostly just two lanes, partly single lane with dodging partially or completely missing asphalt surface, bad condition Margin security is missing to a large extent many, strongly curved curves, tight turns with a stronger slope over longer distances more than 15% slope only restricted for sports cars for cars with trailers (especially caravans) and trucks over 3.5 t total weight no longer suitable and usually prohibited by appropriate signage only partially usable for sports motorcycles mostly unsuitable for racing bikes, possibly with wider tires possible, adjusted to high inclines
SG 4	Even for mountainous difficult route, requires far above average outstanding driving skills.	mostly single lane, few passages barely maintained roadway; i.e. coarse gravel, heavily washed out or extended, side slopes possible, is slippery in the wet (mud, grass), possibly bottlenecks, passable fords except for a few dangerous places no edge protection very tight, not developed sweeping, reversing compulsion for middle-class cars strong gradients, for example T. at altitudes with thin air (over 2000 m) recommended for off-road vehicles, coarse tire tread for Enduros, partly for touring bikes with sufficient ground clearance, coarse tire profile recommended for mountain bikes, partly for trekking and touring bikes, coarse tire profile recommended, circuit adapted to steep climbs
SG 5	Very difficult and dangerous route, use at your own risk	hardly existing lane, near to offroad barely recognizable route conservation, coarse gravel, bare rock, sand, mud; dangerous bottlenecks, high risk of falling rocks, strong erosion and side slope, at times (depending on weather, season) impassable fords completely unsecured margins, also on both sides exposed crest, heavily exposed not always recognizable routing extreme slopes, even at altitudes over 2000 m only for offroad professionals with appropriate vehicles only four-wheel-drive passenger cars with high ground clearance and suitable tires only Enduros and Motocross bikes, possibly also dual sport bikes, a lot of ground clearance and suitable tires only mountain bikes, suitable tires, gear adjusted to steep climbs

Examples[edit]

Königsleitenhaus SG: 1–2
Jenesierstraße or Großglockner-Hochalpenstraße: SG 2
Tendapass-Nordrampe: SG 2–3
Stilfser Joch Ostrampe: SG 3
Zillertaler Höhenstraße: SG 3
Col de Sommeiller: SG 4
Tremalzopass: SG 4
Ligurische Grenzkammstraße (LGKS) average SG 3–4, partly SG 4–5;
Theodulpass: SG 5

Sources[edit]

Weblinks[edit]

Alpine routes with Tracks and Waypoints

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