Once upon a time I had played with mapping data; the official Census Bureau data set (TIGER) included things like route numbers IIRC. So you could do an iterative sequence of reducing the data: strip out roads that don't have route numbers; discard all of the geography and reduce the graph to intersections between consecutively-numbered routes; then walk this graph to try to find a sequence. Open Street Map might be a more useful starting point but I haven't specifically used it.
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Date: 2021-08-23 03:10 pm (UTC)Once upon a time I had played with mapping data; the official Census Bureau data set (TIGER) included things like route numbers IIRC. So you could do an iterative sequence of reducing the data: strip out roads that don't have route numbers; discard all of the geography and reduce the graph to intersections between consecutively-numbered routes; then walk this graph to try to find a sequence. Open Street Map might be a more useful starting point but I haven't specifically used it.