[OSM-talk-ie] Mobile speed camera zones

Colm Moore colmmoore72 at hotmail.com
Mon Mar 31 13:15:21 UTC 2014


1. While the Go-safe cameras may often use particular spots, they can be 
placed anywhere in a zone. Garda vehicles can be anywhere at all, not 
just the designated zones.

I understnad this is the current list of zones: http://www.garda.ie/Documents/User/Total%20list%20of%20ALL%20727%20active%20zones.pdf but an email to traffic at garda.ie should clarify that.

Note that speed limits tend to be poorly signposted in Ireland.

2. I've noticed that road segments often go from village to village, but 
this might not correspond with speed limit boundaries. How does one 
split the segment into two segments?

3. With some roads, e.g. R166 https://www.openstreetmap.org/edit?editor=id#map=16/53.7459/-6.2921 the following data fields are available.
Secondary Road
* Name
* One Way
* Speed Limit
* Structure
* Access
* Lanes
* Surface
* Reference
* All tags (2)
* All relations (0)

However, with an adjacent minor road: https://www.openstreetmap.org/edit?editor=id#map=16/53.7570/-6.3205
 it does not have "Lanes" or "Reference". Is this because it is an unclassified road? How does one record the local road number?


Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has. Margaret Mead

> Message: 3
> Date: Mon, 31 Mar 2014 02:05:33 +0100
> From: Donie Kelly <donie.kelly at gmail.com>
> Subject: Re: [OSM-talk-ie] Mobile speed camera zones
> The road through Charville for example has two speed limits throughout the speed enforcement zone, 50 and 100. What I?ve done is split the road into parts with separate speed limits on them instead of marking the whole road section as 50;60;100
> So now I know when I?m in the 50 or 100. I think there might be a 60 in there so I will fix that on Tuesday on the way down to Cork. All road sections between the start and end of the speed camera signs are tagged as enforcement:maxspeed. Is this ok?
> So querying this data I now know the entry and exit points and the actually speed limits on any part of the road so that I can display the speed limit and raise audible alerts intelligently as you drive on these sections.
> Has anybody got other opinions on how this can be done?
> Thanks
> donie

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