[OSM-talk] waterway=lock

[Peter Childs]

2009/8/27 Jack Stringer <jack.ixion at googlemail.com>:
> Just looking at Keepright and I can see loads of waterway=lock
>
> What is the preferred way to record the information?
>
> http://wiki.openstreetmap.org/wiki/Tag:waterway%3Dlock_gate
> Shows to tag both ends of the lock. If there is a name just to use name.
>
> http://wiki.openstreetmap.org/wiki/Key:lock
> Says to tag either both ends or just use a single node.
>
> Problem I see is that there are 2 ways to name a lock and 2 ways to
> indicate one exists.
>
> For example,
> waterway=lock_gate
> name=Withrington Bottom Lock
>


My reading is that that should be on the Node that is the Lock Gate.

> or
>
> lock=yes
> lock_name=Withrington Bottom Lock
>

The way I read it that should be on the way "between" the two lock
gates, that make up the lock. There should not be any need to put the
name on each gate unless they have different names, But putting
waterway=lock_gate on a node without any way saying lock=yes is a
short hand of saying lock here but not putting in the stretch of water
between the lock and the second lock gate.

I will grant this needs cleaning up. In the case of a lock I added in
Teston, Kent, Uk last week, I put name="Teston Lock" on both gates and
lock_name="Teston Lock", lock=yes on the diversion I added, as the
main River goes over a weir..... (Marked weir=yes), Probably over kill
but never mind.

I have to grant that most of the renders don't show waterways very
well currently.

There is also a 5knots speed limit there as well, But I'm not sure I
got the tags right.

Peter.