[OSM-talk] Next: Relation name (WAS: Removing redundant routing instructions)

Colin Smale colin.smale at xs4all.nl
Tue Apr 28 15:25:47 UTC 2015


 

The "give way" sign won't help to distinguish between the arms where two
roads diverge... 

By the way, the sign is often a STOP sign, so the logic will have to
check for both. 

//colin 

On 2015-04-28 17:09, pmailkeey . wrote: 

> On 28 April 2015 at 13:15, Colin Smale <colin.smale at xs4all.nl> wrote:
> 
>> It's about that which cannot be inferred from the geometry and the current tagging. The road name and number come under "current tagging", but sometimes they are not enough to know how to describe the next instruction(s) to the user. We are in the business of dictating the exact text that a navigator should speak, but we need to provide the basic information on which these decisions can be made. The ambiguity of a T-junction where the side-road has the same name and ref as one of the "straight through" legs is evident. 
>> 
>> Direction of travel is a good point - the "through route" may not be symmetrical. 
>> 
>> //colin
> 
> Are we then back down to the simple issue of failing to tag the arm(s) with the 'give way' markings ? 
> 
> * We're not tagging them in all necessary cases (where the 'side road' is in line with one arm of the main road)
> * Routers are ignoring the tags.
> 
> Is this the solution rather than creating a new solution ? 
> 
> Is a 'through route' a continuation of 
> 
> * Road number
> * Road name
> * The lack of crossing white paint into/out of a 'side road' , or 
> * Direction of travel
> 
> I'm concerned about ambiguity arising out of potential different interpretations.
> 
> I'm sure we will be able to find examples of all combinations of all of the above! 
> 
> -- 
> 
> Mike. 
> 
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 -- 

Mike. 

@millomweb [2] - For all your info on Millom and South Copeland 
via THE AREA'S PREMIER WEBSITE -  

CURRENTLY UNAVAILABLE DUE TO ONGOING HARASSMENT OF ME, MY FAMILY,
PROPERTY & PETS 

T&Cs [3] 

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