[OSM-talk] Turn restriction docs

Frederik Ramm frederik at remote.org
Sun Nov 30 01:25:14 GMT 2008


Hi,

Nic Roets wrote:
> At T junctions the ambiguity is resolved using
> restriction=no_left_turn/no_right_turn.

For the record, I am strongly opposed to automated processing of the 
"restriction" except to see if it is "only..." or "no...".

I want a situation where the two parts of the road are unambiguously 
identified by the "from" and "to" members, meaning that if any of these 
do not start/end at the junction they have to be split.

The "restriction" tag would then be used to check whether I can "ONLY" 
go from "from" to "to", or whether I can "NOT" go from "from" to "to". 
Whatever follows after "no_" or "only_" can be used to paint nice 
matching signs on a map or to give voice commands, but should not be 
used to identify which ways the restiction applies to!

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"




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