[Talk-us] I 85 Express Lane (Atlanta, Georgia)

[Minh Nguyen]

On 22/09/2017 09:46, Jack Burke wrote:
> My questions are:
> 
> * Should this lane be drawn as a separate way?  Legally, you cannot 
> enter or exit the lane except at the designated sections, so drawing it 
> separately makes things simpler for routers.  If it's drawn separately, 
> a pair of motorway_link roads would need to be added at several places 
> (the dashed-stripe sections).  The Lanes wiki page[4] seems to say that 
> it should be drawn separately:  "If one or more lanes of the road are 
> restricted to high-occupancy vehicles (typically vehicles with 2+ 
> occupants, although this varies by jurisdiction). Most useful if 
> entrance/egress is permitted at any point along the route; if entering 
> or exiting the HOV lane(s) is only permitted at certain locations, 
> modeling the HOV lane(s) as separate ways is preferable."  (Even though 
> that says HOV, the same reasoning appears relevant for toll.)  Does 
> everyone concur with this construction?

I might be inclined to map the lane as a separate way, but only because 
I don't know of any routers that currently recognize the change:lanes 
tag. [1] Either way, it makes sense to treat HOV and toll lanes similarly.

[1] https://wiki.openstreetmap.org/wiki/Key:change

-- 
minh at nguyen.cincinnati.oh.us