OpenStreetMap
Surveyed on 20 October 2009 by car using a Garmin Nuvi 255.
1. York Estates new roads: Andrews Road (according to street signs, not Avenue), Langford Crescent, Camfield Place. Surveyed Attfield Road which stops short of the York-Northam Road, (no junction here).
2. Buckingham Road, Cold Harbour Road, Marwick Road, Osborne Road, Lott Road, Railway Road (part of) and unnamed service road parallel to a section of the railway.
3. Sylvester Court, Nugent Road, Bayly Road, Chandos Road (part).
4. Attfield Road up Mount Brown. A maze of 4WD tracks up here, some are firebreaks, some used to access Water Corporation tanks and pumping station. These tracks are accessible from Attfield Road and from Pioneer Drive. Entrances onto the York-Quairading Road are chained and locked.
5. Pioneer Drive, Mt Brown Lookout and Sydney Road.
6. Edwards Street, Birch Street, Seabrook Street and parts of Balladong Street and Suburban Road. These roads were surveyed to check an error on the existing mapping (where Seabrook Street appeared south of Balladong Street, not north where it should be).
Discussion
Comment from burto on 21 October 2009 at 10:33
How do you get a decent log out of a Nuvi 255? I have one and the logged points appear to be (a) locked to the existing roads (b) wide apart
Comment from MCC on 24 October 2009 at 05:07
I'll explain the procedure I'm using and hopefully it will work for you.
1. With the Nuvi 255 locked onto its satellites press the car icon to get to the Location page (My Location, Nearest Address, Nearest Junction down the left hand side of the screen, buttons for Hospitals, Police Stations and Fuel down the right side.
2. This is the sneaky bit. Press the screen ONCE just beneath the words "Nearest Junction", then press the screen TWICE just beneath the words "My Location", then press the screen ONCE again just beneath the words "Nearest Junction". This won't work in indoor mode without a satellite lock.
3. You will now get the "secret" Logging Control page. Press the "Start Recording" button and it will start logging your trace. Press Stop when you have finished.
4. To retrieve your trace plug the Nuvi into your computer's USB port and use Windows Explorer to open the "debug" folder. Each trace will be saved as a "gps.bin" file in its own subfolder, each uniquely named like "20091023_061223".
5. To convert the Nuvi's gps.bin file to a generic gpx format file I'm using a programme called wNutrak which I found on the internet. Works a treat.
I've noticed that while my Nuvi is logging a trace the car icon on the screen tries to lock onto existing roads but the trace data itself is real. The logged points are also close enough together for good accurate mapping. Occasionally I do a three point turn on a road or track or nip a short way down an unmapped side road or track and these little manoeuvres appear perfectly on the traces when opened and viewed on Google Earth or uploaded to OSM.
Have a look at one of my GPS traces and you will see what I mean. The traces are not locking onto the existing roads.
Let me know if you need any further info. This procedure works for me in Australia; hopefully it'll work for you in Kent (?).
Cheers,
Matt (MCC)