[HOT] Trunks in Highway Tag Africa

[Pierre Béland]

Thanks Ralf
We should reference these two network wiki pages since they list the Network relations. Aslo, both are using the int_ref key.
I propose to keep the actual description : 


A main road with a motorway-like layout with multiple lanes which is restricted to motorised vehicles. Unlike motorways, trunk roads might have crossings or traffic lights.


Plus add exception for inter-regional highway networks as below :

The convention is to also use the trunk classification for Major road networks across countries. with the following keys :
    [highway=trunk][int_ref=road reference]  ( ex. int_ref={ TAH 1, SADC 10 } )

 See for Africa, the [Trans-African highway](https://wiki.openstreetmap.org/wiki/WikiProject_Trans-African_Highway) and the [Southern African Development Community Regional Trunk Road Network (SADC RTRN)](https://wiki.openstreetmap.org/wiki/SADC_Regional_Trunk_Road_Network)

 
Pierre 
 

    Le lundi 25 janvier 2021 13 h 23 min 47 s UTC−5, Ralf Bernhardt <raabee at gmx.de> a écrit :  
 
  
could be also interesting:
 
 
https://wiki.openstreetmap.org/wiki/SADC_Regional_Trunk_Road_Network
 
 Am 25.01.21 um 18:38 schrieb Pierre Béland via HOT:
  
 
  Hi Rafael,
  
  The best yes would be that we add a note adding exception for major road networks such as the Inter-African highway project sponsored by UN, Inter-African Bank and other regional partners. See https://wiki.openstreetmap.org/wiki/WikiProject_Trans-African_Highway that describes the OSM relations to describe this network. 
  
  Some infos also in  https://en.wikipedia.org/wiki/Trans-African_Highway_network, where it says that  this is an infrastructure program across Africa and there are not necessarily signs on the roads. 
  
  Pierre  
   
  
      Le lundi 25 janvier 2021 11 h 34 min 30 s UTC−5, Rafael Avila Coya <ravilacoya at gmail.com> a écrit :  
  
   Hi, Pierre:
 
 So we should add that to the wikis, right? Otherwise users will be 
 confused as when to use the trunk or primary values.
 
 Cheers,
 
 Rafael.  
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