> On Dec 19, 2016, at 4:20 PM, 'P Wat' via Osmand <[email protected]> 
> wrote:
> 
> Hi Santamariense.
> Three parts to this reply; (1) Definition of word "Avoid"; (2) Use of "Avoid" 
> function in OsmAnd.  (3) Use of unpaved roads.
> 
> (1) Definition and use of the  word "Avoid".
> In a navigational context "Avoid" means or "Do not go to or through ...".  
> The use of the term does not imply a legal obligation,  It does imply that 
> all alternative routes should be considered, and that this route is not an 
> option.  Perhaps the reason could be the temporary closure of a route by 
> road-works or other blockage.
> 
> (2) Use of the "Avoid" function in OsmAnd.
> Suppose you've set a start and destination, OsmAnd has plotted the route, and 
> you notice it uses a road which you do not want to use. Hit the blue/white 
> arrow.  Hit the "settings" gear-wheel.  Hit "Avoid roads".  Hit "Select on 
> Map".  Touch the map at a suitable point.  Touch again more accurately if 
> necessary.  Hit the three vertical arrows (bottom right hand side of screen). 
>  Hit "Avoid".  Watch for re-calculated route.   Repeat all the above to 
> "Avoid" other roads if required.
> When your trip is completed, you'll need to delete the list of "Avoided" 
> locations (unless you need them for your next trip).  You'll find them in 
> Route settings (Blue/white arrow.  "Settings" gear-wheel.  "Avoid roads".  
> Hit each "x").
> 
> (3) Use of unpaved roads - You can set/un-set this option in Menu, Settings, 
> Navigation Settings, [Appropriate profile], Avoid. 
> 
> Helpful?
> Paul W.
> Native English Dyslexic!

Not really. There ought to be a distinction between prohibiting a road and 
simply not wanting to use it unless there is no other way. The first can be 
achieved in the logic by excluding it from the network, the second by assigning 
a penalty to it such that it is only used if the alternatives are even worse.

In my mind “avoid” is less strong a word than you suggest and implies something 
you would rather not do rather than something that is legally prohibited, 
deadly, or otherwise a really bad idea. I will grant you that a quick glance at 
the OED and my trusty 1960s vintage American Heritage Dictionary don’t bear me 
out as well as I’d like.

I thought perhaps “shun” could be used for the alternative. But that seems to 
be a pretty close synonym to that particular meaning of “avoid”. (There are 
other meanings of “avoid” in the OED which I was not aware of.)

Example1: In general, I’d prefer to not travel on unpaved roads. But I have 
some relatives who live on an unpaved road. If I cannot drive on unpaved roads 
at all, I will not be able to get to their house. I would like a way to tell 
the routing software that I would rather not drive on unpaved roads but I will 
if I have to.

Example2: I am riding a moped/motorized cycle and the law strictly prohibits me 
from riding it on a freeway/motorway. If all the possible ways from point A to 
point B require some freeway/motorway driving, then I cannot get to B. I would 
like a way to tell the routing software that I cannot drive on a 
freeway/motorway.

Example3: I am driving my 90 year old vintage automobile which is legal for use 
on the freeway/motorway, but in general I’d rather travel on the older side 
roads. I would like a way to tell the routing software that I would rather not 
drive on freeways/motorways but I will if I have to.

Its been a while since I looked at routing.xml, but my impression is that, 
depending on type of routing (auto, bicycle, foot, etc.) and type of road, 
“avoid” is used in both of the above contexts leading to confusion.

Maybe a solution would be to use the terms “prohibit” and “penalize”. 
“Prohibit” if you absolutely cannot use ways of the particular classification, 
“penalize” if you would rather not use the ways.

TF
Native American English Dyslexic

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