User:Alv/Conclusive-solution-to-restrictive-surfaces

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Draft.

If there's a road user group you think is missing, add it below:

  • truck
    • one/several driving axles
    • empty/full weight

Reason

There's now at least highway=*, access=*, surface=*, barrier=*, tracktype=*, smoothness=*, sac_scale=*, trail_visibility=* (, incline=*) that all affect the "usability" of a way, but are considered insufficient for some cases.

Usability to mappers and data users

Tagging should be concise, self-explanatory and have powerful expression capability of the reality behind the data.

While it could be possible to tag for each and every possible user separately, it could lead to unfeasible amount of tags on many ways or missed information if the data user didn't know how to apply other user groups accessibility information:


Conclusions

By deducing and from the table below and of those 26 example roads:

  • some surfaces become slippery when wet - a problem or a barrier for some users
  • some surfaces don't hold the weight sufficiently, especially when the pressure is high i.e. narrow wheels or high heels
  • some users require smooth and particle-free surfaces
  • limited ground visibility (grass) hinders use even when not really bumpy
  • bumpiness is more of a comfort factor, until it affects the ground clearance (profile). Bumpy surfaces often have other characteristics that limit grannies, skaters or such.

What limits use

I'm compiling all track-like pictures that I could find in this wiki into this table to try to find common nominators for restrictive qualities. Filling and sorting in progress...

Wet and snowy weather being added. A lone '+' means that restrictions above apply, a '-' means nothing restricts use.

Weather Image Current tags Wheelchair Roller blades/ skate Foot Bicycle Moped Motorcycle Motorcar (will divide) ATV
Dry Smoothness veryhorrible.JPG surface=cobbles

wheelchair=no (tracktype=grade5)

roots

bumpy

not-smooth

sand

granny, high heels: roots, uneven

others: -

mtb: -

trekking bike: requires maneuvering (avoid) others: roots, sharp bumps

roots motocross bike: -

others: roots, sharp & high bumps

off-road vehicle: -

high-clearance: sharp & high bumps (avoid) others: sharp & high bumps

-
Wet Smoothness veryhorrible.JPG +traction +traction granny, high heels: +slippery

others: puddles (avoid)

mtb: traction (avoid)

trekking bike: traction, +puddles others: +puddles, +traction

+traction, +puddles motocross bike: -

others: +traction

off-road vehicle: -

others: +traction

-
Snow Smoothness veryhorrible.JPG presumed not snow plowable +snow +snow +snow +snow +snow motocross bike: snow (possibly avoid)

others: +snow

off-road vehicle: snow (possibly avoid)

others: +snow

-
Dry Smoothness impassable.JPG
Dry Jena Track roots.jpg width=0.5

wheelchair=no surface=unpaved

roots not-smooth

not-compact

high heels: roots, uneven

granny: bumpy
others: -

mtb+skilled: -

others: roots

roots motocross bike: -

others: roots

width

sport car: roots/clearance

-
Wet Jena Track roots.jpg + + + mtb+skilled: slippery roots (avoid)

others: +

slippery roots slippery roots + -
Snow Jena Track roots.jpg + snow + snow + snow, ice

hiking: -

+ ice + ice + ice + ice -
Weather Image Current tags Wheelchair Roller blades/ skate Foot Bicycle Moped Motorcycle Motorcar (will divide) ATV
Dry Scree.jpg wheelchair=no

surface=gravel

bumpy, not-compact, sharp rocks not-smooth

not-compact

high heels: uneven, not-compact

granny: uneven
others: -

racing bike, city bike: sharp rocks, uneven

skilled: - others: rocks (avoid)

- motocross bike: -

sport bike, tourer: bumpy, traction others: sharp rocks (avoid)

sport car: uneven, clearance, banking

others: sharp rocks (avoid)

-
Dsc01467.jpg
Jena Trackexample rough.jpg width=1.7

wheelchair=no tracktype=grade2 surface=unpaved

roots not-smooth

not-compact

high heels: roots, uneven

granny: roots, bumpy
others: -

racing bike: not-smooth

city-bike: bumpy (avoid) others: -

bumpy (avoid) motocross bike: -

others: roots (avoid)

width

sport car: roots/clearance

-
Jena Trackexample3.jpg (natural=heath)

width=0.5 surface=grass wheelchair=no

slope

grass

grass

not-smooth

high heels: uneven, support

granny: ground visibility others: -

mtb: -,

trekking bike: -, city bike: uneven (avoid) others: not-smooth, grass, uneven, ground visibility

scooter: long grass

others: -

long grass,

ground visibility

 ? -
Dry Jena 032.jpg width=0.5

wheelchair=no

width

bumps long grass

not-smooth

not-compact

high heels: uneven, dirty, support

granny: uneven, width others: -

racing bike: not-smooth,

others: -

- tourer: width

others: -

width -
Wet Jena 032.jpg +mud +mud high heels: +mud

+traction granny: +mud +traction others: mud (avoid)

racing bike:

others: mud (avoid)

mud (avoid) traction + -
Snow Jena 032.jpg (presumed not-plowed) +snow +snow high heels: +traction

granny: +ground visibility +traction others: +snow (avoid)

racing bike: +snow,

with-studs: avoid others: +snow, +traction

+snow +snow

+traction

+snow -
Weather Image Current tags Wheelchair Roller blades/ skate Foot Bicycle Moped Motorcycle Motorcar (will divide) ATV
Smoothnesshorrible.jpg tracktype=grade5

width=1.8 surface=grass (grass=long)

grass

bumpy ground visibility

grass

not-smooth not-compact

high heels: ground visibility

bumpy granny: bumpy others: -

mtb: -

others: bumpy ground visibility

- tourer: ground visibility,

bumpy others: -

4wd with high ground clearance: -

others: ground visibility, bumpy ground clearance

-
Smoothnessverybad.jpg tracktype=grade4

surface=pebbles width=2

uneven (avoid) not-compact

bumpy

high heels: bumpy

others: -

racing bike: not-smooth

others: -

- - - -
Jena Trackexample muddy.jpg width=2

wheelchair=no tracktype=grade4 surface=unpaved

bumpy

mud

not-smooth

mud bumpy

high heels: dirty, sinking (mud), bumpy

granny: bumpy
others: -

racing bike: not-smooth, mud, bumpy

city-bike: bumpy (avoid) others: -

- sports bike: mud

tourer: mud others: -

sports car: clearance, bumpy

others: -

-
Jena Trackexample profile.jpg tracktype=grade4

surface=unpaved

uneven (avoid) not-smooth

not-compact

high heels: uneven

granny: uneven (avoid) others: -

racing bike: not-smooth

others: -

- - sports car: clearance

others: -

-
Dry Bridleway-reitweg-de.jpg surface=turf not-compact not-compact, not-smooth high heels: dirty, not-compact

granny: not-compact others: -

trekking bike, mtb: -

others: not-compact (avoid)

- - sports car: clearance (avoid?)

others: -

-
Wet Bridleway-reitweg-de.jpg +sinking

+mud

+mud high heels: +mud

granny: +mud others: mud (strong avoid)

trekking bike, mtb: mud (avoid)

others: +mud

mud (avoid) sport bike, tourer: mud

others: -

sports car: mud, clearance

others: mud, bumpy (avoid)

Snow Bridleway-reitweg-de.jpg (assumed plowed) +snow

+traction

+snow high heels: bumpy, traction

granny: uneven, traction others: -

with studs: -

others: traction (avoid)

- traction sports car: bumpy

others: -

-
Weather Image Current tags Wheelchair Roller blades/ skate Foot Bicycle Moped Motorcycle Motorcar (will divide) ATV
Dry Surface3.jpg surface=sand

tracktype=grade2

- sand = not-smooth - racing bike: not-smooth (avoid)

others: -

- - - -
Wet Surface3.jpg mud,

puddles (avoid)

mud,

puddles

high heels: mud, puddles

granny: traction (avoid) others: dirty (minor avoid)

racing bike: +

city bike: mud (avoid) others: -

- tourer: mud, traction (avoid)

others: -

- -
Snow Surface3.jpg (assumed plowed) snow (avoid) +snow, +bumpy high heels, granny: +traction studs: -

others: traction

traction (avoid) traction (strong avoid) - -
Jena Trackexample grass.jpg width=2.2

tracktype=grade4 surface=grass

- not-smooth,

grass

granny: uneven

high heels: dirty, sinking (avoid) others: -

racing bike: not-smooth

others: -

- - - -
Dry Surface1.jpg tracktype=grade3

surface=sand

- not-smooth, sand - racing bike: not-smooth

others: -

- - - -
Wet Surface1.jpg mud,

puddles (avoid)

mud,

puddles

high heels: mud, puddles

others: dirty (minor avoid)

racing bike: +

city bike: dirty (minor avoid) others: -

- tourer: mud, traction (minor avoid)

others: -

- -
Snow Surface1.jpg (assumed plowed) snow (avoid) +snow, +bumpy high heels, granny: +traction studs: -

others: traction

traction (avoid) traction (strong avoid) - -
Dry Dirt road para-br.jpg surface=dirt

tracktype=grade2

dirty (avoid) not-smooth high heels: uneven, dirty (avoid)

others: -

racing bike: not-smooth, not-compact

others: -

- - race car: bumpy

sports car: bumpy (avoid) others: -

-
Wet Transportation in Tanzania Traffic problems.JPG (surface:seasonal:wet=muddy) sinking (mud) +mud high heels, granny: mud, uneven

others: mud (avoid)

mtb: -

others: sinking (mud)

- tourer, sport bike: traction (avoid)

others: -

sports car: mud, clearance

trucks: banked (strong avoid) others: traction, clearance (avoid)

-
Snow Dirt road para-br.jpg Not applicable
Weather Image Current tags Wheelchair Roller blades/ skate Foot Bicycle Moped Motorcycle Motorcar (will divide) ATV
Jena Trackexample4.jpg surface=gravel

maxwidth=2.2

avoid gravel = not-smooth high heels: uneven

others: -

racing bike: not-smooth

others: -

- - - -
Surface2.jpg surface=gravel

maxwidth=2.2

avoid gravel = not-smooth high heels: uneven

others: -

racing bike: not-smooth

others: -

- - - -
Jena Trackexample rough3.jpg surface=pebbles

tracktype=grade4

uneven (avoid) not-smooth high heels: uneven

others: -

racing bike: not-smooth

others: -

- - - -
Dry Map feature ford.jpg width=2.7

surface=paved

dirty (avoid) not-smooth

wet

high heels: dirty/wet, uneven

granny: ground visibility
others: -

racing bike: not-smooth

others: -

- - - -
Wet Map feature ford.jpg (rise in water level assumed) ground visibility + +

others: ground visibility (possible avoid)

+ ground visibility (avoid) ground visibility (avoid) ground visibility (avoid) ground visibility (minor avoid) -
Snow Map feature ford.jpg (assumed frozen) ice strength unknown (avoid) traction traction (minor avoid) with studs: -

others: traction

traction (minor avoid) traction (minor avoid) - -
Dry Jena Trackexample1.JPG surface=unpaved

width=1 wheelchair=no

- not-smooth

unpaved

- Racing bike: not-compact

others: -

- - width -
Wet Jena Trackexample1.JPG dirty +dirty high heels: dirty

others: -

+ - - + -
Snow Jena Trackexample1.JPG (assumed snow plowed) - +snow + with studs: -

others: +traction

traction traction + -
Weather Image Current tags Wheelchair Roller blades/ skate Foot Bicycle Moped Motorcycle Motorcar (will divide) ATV
Dry Dscf0222 600.jpg surface=concrete - not-smooth (slab seams) (avoid) - racing bike: not-smooth (seams)

others: -

- - - -
Wet Dscf0222 600.jpg - + - + - - - -
Snow Dscf0222 600.jpg (assumed plowed) - ice - with studs: -

others: + ice

- - - -
One-lane chicane 1.jpg surface=concrete incline not-smooth (slab seams) high heels, granny: incline (avoid)

others: -

incline (oneway avoid) - - - -
Bus prumyslova.jpg width=7 (or 2.5)

surface=paved

- - - - - - - -
Dry Highway secondary-photo.jpg width=6

surface=paved

- - - racing bike: not-smooth (avoid)

others: -

- - - -
Wet Highway secondary-photo.jpg - - - - - - - -
Snow Surface Iceroad.JPG - +snow

+traction

- with studded tires: -

others: traction

traction traction - -
Weather Image Current tags Wheelchair Roller blades/ skate Foot Bicycle Moped Motorcycle Motorcar (will divide) ATV