Chains of ways with ref='20'

ref # of ways dupe
nodes		 start end length bearing
20 7 0 start end 1401 341
20 7 0 start end 1309 161
2 chains. Paired

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Generated 2011-02-10T08:10:30+00:00 from file /home/harrywood/public_html/waychains/us-motorways-simplified.osm