[Tagging] [RFC] Feature Proposal - Wheelchair lifts and ramps on platforms

[Wieland Breitfeld]

This proposal wants to establish the keys wheelchair:portable_ramp=*  
and wheelchair:portable_lift=* to be placed on public transport  
platforms to indicate whether a portable ramp or a portable wheelchair  
lift is present at the platform. It also wants to establish the  
subtags about dimensions and load capacity to give further information  
about the physical conditions under which these devices can be used.

These tags should be placed on the element that represents the  
platform, e.g. public_transport=platform for a PTv2 platform.

https://wiki.openstreetmap.org/wiki/Proposal:Wheelchair_lifts_and_ramps_on_platforms

Please discuss this proposal on its Wiki Talk page.