Author Topic: Asia-Pacific Master Thread (UNESCAP / ESCWA)  (Read 1538 times)

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Offline yakra

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Re: Asia-Pacific Master Thread (UNESCAP / ESCWA)
« Reply #15 on: February 14, 2018, 03:14:50 pm »
I think our primary source is OSM, isn't it?
I think that by "primary sources", Duke87 means sources direct from the government agencies responsible for the highways -- or as close as we can get to that.
OSM itself can be pretty unreliable in places, Manitoba being a notable example.

Offline Duke87

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Re: Asia-Pacific Master Thread (UNESCAP / ESCWA)
« Reply #16 on: February 14, 2018, 10:12:46 pm »
but I can't check it against primary sources

I think our primary source is OSM, isn't it?

I'm using the academic definition of "primary source" here - i.e. the source material for the facts, not a second-hand account of them.

So no, OSM is not a primary source, it is a secondary source. An official DOT map is a primary source since it's published by the agency that maintains the roads. An official route log is also a primary source for the same reason. And while GMSV is technically a secondary source, we trust that their pictures of signs posted in the field (the signs themselves are primary sources) are not altered so as to change what they say.

Offline michih

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Re: Asia-Pacific Master Thread (UNESCAP / ESCWA)
« Reply #17 on: February 15, 2018, 01:40:19 pm »
Ok, thanks!