After much head scratching, reading the wiki and tagging mail-list the best I
could come up with is:
type = restriction
restriction:conditional= no_left_turn @ length > 19
See: http://wiki.openstreetmap.org/wiki/Conditional_restrictions
However I can see two problems:
1. There are only 11 restriction:conditional tags in the world.
There are only two type= restriction:hgv in the UK and 2 in the US.
restriction:hgv is slightly more popular; there are 171 of these in the world.
2. Almost none of the routers that use OSM currently consume turn restrictions
anyway.
On Sunday, 23 August 2015, 22:47, Mark Pulley <mrpul...@lizzy.com.au>
wrote:
Can anyone give a suggestion for how to tag a turning restriction that only
applies to long vehicles?
The basic tags I understand:
restriction = no_left_turn
type = restriction
I have added this exception from the turn restrictions plugin:
except = bicycle;motorcar
however, this doesn’t really encode what I want - vehicles over 19 metres
prevented from turning.
would this (not really suitable) tag work?
minlength = 19 (it’s not on the page
http://wiki.openstreetmap.org/wiki/Relation:restriction
I have considered
except = maxlength=19
however it’s not a standard format, and routers would probably have trouble
interpreting the tag
I could use:
restriction:hgv = no_left_turn
however there are heavy goods vehicles shorter than 19 metres who are allowed
to make the turn.
Mark P.
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