[Tagging] Best way of tagging split between electronic toll and cash lanes?

[Georg Feddern]

Nathan Edgars II schrieb:
> Many toll plazas now have high-speed electronic toll lanes. Tagging 
> seems haphazard. As I see it, the choices are:
> *What gets tagged as motorway vs. motorway_link?
> *What gets the name, ref, and relation membership?
> [...] 
> So the question is whether to use motorway_link for what's signed as 
> an exit, or to consistently use motorway for either cash or for 
> high-speed.

I would use _link only, if it really links between two different ways, 
maybe even of the same type.
But here I think it is just one highway going through, so I would not 
tag it as link.
The toll point itself has to be considered as a slow down - essentially 
and visually by the user and supportively by a router.
Using _link for the non-electronic lane may irritate 'normal' routers to 
prefer the electronic toll lane - and that may lead a non-electronic 
user in a dead-end. (downward compatibility as a security fall back)
In this case the router should discriminate the lanes only by access 
tags (see below) - but not by the highway tag itself.

Name, ref and relation - as you may choose every lane to go on your 
(high)way, all of them belong to all lanes in my opinion.

>
> There's also a question of what access restrictions go on the 
> high-speed lanes.
>

OK, to choose the 'right' lane by routers, it is essentially to know  - 
but to use them, you need special equipment, and I don't know, if that 
is different for different toll passages. (Or is EPASS an 'everywhere 
equipment/operator'?)
If you need different equipment, this (or the operator) must be tagged - 
and must be configured for the router too!

I do not know, if an access=electronic_toll (with a subkey 
electronic_toll=*) would be satisfactory. (How do/shall routers handle 
unknown access values? I hope/think as 'no').

Nevertheless - as long as a router cannot discriminate _all_ of the 
necessary informations, he can only warn about the toll point itself - 
and the user have to discriminate visually.

Georg