CS:Key:mtb:scale
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Klasifikace obtížnosti stezek MTB
Properties
mtb:scale:uphill, mtb:scale:imba, incline Used combinations in
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Rationale
Provide a classification scheme for mapping the difficulty of trails suitable for mountain-biking, since for a mountainbike going downhill has a different difficulty than going uphill those have to be, if not flat, tagged separately.
This is one subset of several Proposals brought in concerning Mountainbike
Applies to
Jak mapovat - Použití, Tagy a Hodnoty
Hlavní používaný klíč je mtb:scale=0 až 6. Bývá používán ke klasifikaci úrovně obtížnosti stezky (nejedná se o sklon). Dodatečně může být přidán tag mtb:scale:uphill=0 až 5 ke specifikaci obtížnosti výšlapu. (nejlépe používat s tagem incline pro určení směru)
If a finer seperation is needed than provided by the 5 classes, "+" or "-" can be added to the value. E.g. mtb:scale=1+ for ways on the upper difficulty of "1", but not yet "2".
mtb:scale applies primarily to ways. The difficulty should be based on the general difficulty over a longer stretch of a way, there can be a few places where the difficulty is higher. Those places should be classified on a point of the way.
Crux spots or very dificult single places
In order to highlight spots on a way, that feature a difficulty that is clearly more difficult than the way in general (e.g. one full grade more difficulty), on can highlight them by placing a node on the way with the difficulty to clear that node (do not highlight every switchback of a way however). If you put a point with mtb:scale=1-6 (0 makes no sense) outside of the way, then this shows a place that is more difficult, but can be circumvented.
mtb:scale=0-6
The main tagging scale.
| Tag | Popis | Maximální sklon | STS ekvivalent | Obrázek příklad |
|---|---|---|---|---|
| mtb:scale=0 | Štěrkový nebo udusaný povrch. Nijak zvlášť náročné. Většinou lesní a polní stezky. (highway=path). Sekce se schodky, balvany nebo kořeny nejsou očekávány. Široké zatáčky, snadný a průměrný sklon. Žádné speciální dovednosti nejsou potřeba. Snadné na výšlap.
Pro velmi snadné cesty můřeš použít mtb:scale=0- pro náročnější mtb:scale=0+ (když nejsou mtb:scale=1) |
- | S0 |
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| mtb:scale=1 | Menší překážky jako kořeny a malé kameny. Eroze terénu zvyšuje náročnost. Místy nezpevněná půda. Úzké odbočení ale bez vraceček. Jízda vyžaduje opatrnost a pozornost, ale žádné speciální dovednosti nejsou potřeba. Překážky se dají přejet. Obtížné na výšlap.
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<40% | S1 |
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| mtb:scale=2 | Překážky jako velké zkály a kameny. Ztrácí se půda. Schodky jsou očekávány. Široké vracečky, sklon do 70%. Potřeba některé pokročilejší jezdecké dovednosti. Pouze velmi zkušení jezdci dovedou vyjet nahoru.
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<70% | S2 |
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| mtb:scale=3 | Mnoho sekcí s velkými překážkami jako balvany a velké kořeny. Hodně vraceček a "off-balance" zatáček. Objevuje se kluzký povrch a skální násypy. Povrch může být velmi kluzký. Je potřeba stálá koncentrace a velmi dobré jezdecké dovednosti. Téměř nemožné k vyjetí.
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>70% | S3 |
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| mtb:scale=4 | Hodně příkré a obtížné s velkými balvany a kořeny. Častá ztráta podkladu. Velmi příkré sekce s velmi úzkými vracečkami a velké schodky, které způsobují kontakt převodníku se zemí. Některé trialové techniky jsou nezbytné. Téměř nemožné k vyjetí.
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- | S4 |
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| mtb:scale=5 | Velmi příkré a obtížné s obrovskými balvany, sutinami a sesuvy. Rychlost musí být přizpůsobena for counter-ascents. Pouze krátké pasáže vhodné k akceleraci a brždění. Spadané stromy můžou vytvořit pěší pasáže ještě náročnější. Velmi málo Mountainbikerů umí skutečně sjet tuto obtížnost. Většinou budete tlačit.
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- | S5 |
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| mtb:scale=6 | Classify ways with 6 that are not rideable at all for a mtbiker. E.g. Chains or stemples (metal rungs) on a via ferrata or simply unsecured alpine pathes that are not even partly rideable for the very best mtbikers (using trial techniques). Steepness is often >45°.
If used for single points, then this highlights exceptionally difficult spots. Often spotting is impossible and falling may be lethal.
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mtb:scale:uphill=0-5
In the case you want to be more specific about the difficulty for going uphill. Please don't forget to also use the Key:incline on such ways so that routing software can make the way oneway. Especially for mtb:scale:uphill=4 and mtb:scale:uphill=5.
| Tag | Description | Average incline | Maximum incline | Obstacles |
|---|---|---|---|---|
| mtb:scale:uphill=0 | Graveled or hardened earth. Good Grip. Usually a highway=track. Even unskilled mountainbikers can ride up here easily. Cars with good tire clearance can go down or up without problems. | <10% | <15% | None |
| mtb:scale:uphill=1 | Graveled or hardened earth. Good Grip so wheelspin (also when standing) does not happen when taking care. Steep forest track or easy to ride footpath. | <15% | <20% | Some loose objects may lay on the trail but are avoidable |
| mtb:scale:uphill=2 | Mostly stable, unsurfaced, partly washed out, steady pedalling and ballance needed. With good technique and reasonable fitness this should be still doable however. | <20% | <25% | Fistsize loose rocks, roots or rocky underground |
| mtb:scale:uphill=3 | Variable Surface, tight corners, small steps, surface is rocks, earth or gras. Very good ballance and steady, round pedalling needed. Without very good skills mtbikers have to push their bike uphill | <25% | <30% | Fistsize loose rocks, roots and branches or rocky surface |
| mtb:scale:uphill=4 | Way is very steep, or in bad condition for pedalling uphill. Steps, trees, roots and tight corners are present and even good and strong mountainbikers will have to push or carry their bike for parts of the way | <30% | <40% | Big loose rocks, big branches across the trail, rocky or loose surface |
| mtb:scale:uphill=5 | Way is too steep and/or difficult to ride uphill. We need this level for signalling to other mtbikers that on this part they have to push and carry the bike. | - | - | - |
Notes to Usage of the scales
Notes
- "Equivalent to STS" means equivalency to the german Singletrail-Skala v1.4 as found here [1]; upon which this scale is based.
You may also find a more in-depth description of the scale on that page, with more photos (just click on S0 to S5 in the upper bar to get more detailed descriptions and pictures for each level).
- The example photos of the STS scales are from http://www.singletrail-skala.de/ and may be reused under cc-by-sa-2 or cc-by-sa-3.
- If you click on the STS Equivalency links, you are linked to the respective difficulty grades on www.singletrail-skala.de. There are more pictures for each scale to give a better visual impression about each grade.
- Note mtb:scale only applies to the technical difficulty of mountain biking on a trail. It says nothing regarding the legal situation. For trails where cycling/mountain biking is explicitly forbidden add bicycle=no. For trails there mountain biking/cycling is implicitly forbidden there is no key yet.
Usage examples
If only one condition is met, the respecting scale should be used. E.g.
- a way with gradient 50% has to be tagged mtb:scale=2 or higher. Additional to signal to everyone that this way is steep mtb:scale:uphill=5 is needed.
- a way with loose surface possible, small roots and stones that goes flat is still mtb:scale=1 and not lower mtb:scale=0. mtb:scale:uphill is not needed.
- a way with loose surface possible, small roots and stones that goes at an average incline of 25% is mtb:scale=1 and mtb:scale:uphill=3. This is a good example for a way that is quite easy to go down, but very difficult to go up.
mtb:scale:imba=0-4
The IMBA Trail Difficulty Rating System shall be used for bikeparks. Especially for North Shore. It is adapted to mtb trails with artificial obstacles. For "natural" trails it is advised to use the mtb:scale/mtb:uphill:scale.
mtb:scale:imba= ... 0 .................... 1 ..................... 2 ..................... 3 ..................... 4 ....
Graphics reused with permission from IMBA.
Example Rendering of the mtb:scale using Garmin Mapsource
See Also
- Approved_features/mtb:scale
- Mountainbike General page on how to tag ways appropriate for Mountainbiking.
- sac_scale=* - a classification scheme for hiking trails








