Tagging lanes that you can park or drive in

[aharvey (Andrew Harvey)]

I think we need a parking=traffic_lane tag.

There are two distinct types of parking within the carriage way.

1. parking=lane You can park inside the road carriage way, which if nobody was parked there cars could use that space to drive through, but not as an extra lane, and you aren’t blocking traffic completely by parking there.
   

   
   
   Mapillary

2. parking=traffic_lane You can park inside a traffic lane. Cars can drive through the lane, but if they encounter a parked car, they need to change lanes.
   

   
   
   Mapillary

In this case it should still be lanes=4. The parking may be 24/7 or it may only be during certain times (eg night), but even if it’s conditional parking, the lane is still open to traffic (if no body is parking there) so it’s wrong to make lanes:conditional.