I think that they also need a better understanding of Chaos and order can actually arise from a chaotic system.

I find that sometimes that a new adjacent box has a "1" appended to the ref, i.e. IV1 1131 in your example. Anyway, we've found a perfectly legitimate example of where one of the refs can be duplicated, thus showing why it's never safe to make assumptions about apparent errors.

Hmmm, now that description of "P" is really bad! Add to that the fact that it looks like IV4 is a huge area and looks like you'll have a fun task on your hands tracking it down. A good excuse for just mapping the whole of IV4 I suppose...

Remember that the data quality varies from area to area. It may be, for instance, that a mapper in a given area isn't aware of the important that connecting roads / footways etc. need to be connected via a common node, whereas mappers in other areas can be fully aware of this.

When you're discovering these errors are you sending a quick message to the person that mapped it to help educate them on how to input routable data? Otherwise that person may just continue to enter unroutable data, thus creating more work for you to fix.

Just seen that you fixed some broken roundabout tagging on the A20 (A bit where the roundabout tag had managed to leak onto the road beyond the roundabout). Thanks for that.

It's the highway class rather than the ref that you sourced from WSCC highways department, so I think a slight variation to the source tag is in order. I think that referencing this diary post is a good way to elaborate on why the tagging is as it is.

Don't forget cycle parking either! It's useful to note the capacity and whether it's covered or not.

I had planned to cycle through Bristol for my Three Corners trip, but have moved my planned route to avoid it completely now, given how bad the signing was. I should be able to make much better progress on country roads that through the city anyhow.

Oh and speaking of lost. Aren't Bristol's NCR4 signs (or lack thereof) just awful?!

I should have linked one of my Pembrokeshire shots as well really. So here goes:

http://www.flickr.com/photos/gregorywilliams/3452610997/

By the end of this summer things'll look even healthier for the NCN map. Quite a bit of my route will be using the NCN specifically to get it mapped, and I should get most of the missing NCR1 gaps sorted on the return leg from John O'Groats back home to Canterbury. I'm doing the final little tweaks to my plans now, so I'll be announcing my route in a week or two.

I too am glad to see everyone else's data on my eTrex, and love being able to briefly glance down at it to ask myself "Is that road coming up on the right-hand side mapped?" as well as using it to navigate by of course.

That reminds me of when I first discovered OSM. It was pretty late at night: 23:00 or so. I just had to enter some data that night, so I went out for a cycle for about half and hour then got back and started entering data (whilst having to do much learning) into the small hours. I'm glad you're finding OSM addictive!

Ah, which Minster was it? The one in Thanet, or the one on the Isle of Sheppey? I mapped the former quite some time back. Lovely church there.

According to the wiki, Milton Keynes is in two months, not next month.

BTW, are you aware that there's a Leicester mapping party planned for a few week's time?: http://wiki.openstreetmap.org/wiki/Leicester_Mapping

I don't know when OpenPisteMap gets rerendered, but the main Mapnik map gets rerendered on a weekly basis, starting some time after the planet dump on Wednesday each week.

That was me. I've got relations that live there, so mapped it over the Christmas period whilst visiting them.

I have a Garmin Vista HCx and have uploaded lots of traces collected with it without an error.

Congratulations! I've just added the MegaStar award to your user page on the wiki.

Have you tried to download GPS tracks for the area? Perhaps somebody else has already submitted tracks for the road, which'll help you determine whether the road is in the correct place. If not then your plan of surveying again another day sounds good -- the GPS signal can vary a bit each day anyway.

If you were surveying by foot then that may explain the wobbly trace. I've found that as soon as you achieve bicycle / car speeds that it's usually quite a smooth trace. Also, try to log at quite a high frequency (limited by your GPS's capabilities, memory, possible SD card support, and the time you want to be mapping for). I log at one trackpoint per second.