[Tagging] Default access for service=driveway?

[Ture Pålsson]

2020-12-22 10:14 skrev Frederik Ramm:
> Hi,
> 
> A property owner in Germany has complained that several routing engines
> - crucially also the one used by the local transport authority - route
> pedestrians trough their private residential property as a "shortcut"
> for accessing a bus stop.
> 
> The private residential property has two driveways (highway=service,
> service=driveway) entering it from different sides, thereby enabling
> people to save a few metres by walking through, rather than around, the
> property.
> 
> These driveways do not have an access=private (or access=destination)
> tag or anything like that.
> 
> Questions:
> 
> 1. Should a routing engine automatically assume that something tagged a
> "driveway" is not suitable for through traffic?

In a place without some kind of right-to-roam, probably yes. (Here in 
.se, I'd assume a service=driveway with no explicit access tags to be 
motor_vehicle=destination. For foot= it becomes a matter of where the 
driveway enters the "private zone", posing an interesting problem for 
the router. :-) However, even here, an "official" router run by the 
local public transport authority should probably not route foot traffic 
over a service=driveway unless it "knows" that it is ok.)

> 
> 2. If you map such driveways, would you add access=private (or
> access=destination) in OSM...
> 
> 2a. ... even if there is no specific signage locally?

Probably no.

> 2b. ... if there is a sign that says "access to houses X,Y,Z" without
> saying that other access is forbidden?

Probably yes.

> 2c. ... if there is a sign that says "private driveway"?

Probably yes.