Known INEGI Data Issues

The following is a list of known data issues

Known issues

1. CVU and IVLA datasets are not a true road network. There are dangling ends (definition?) and long edges that need to be split at intersections with other edges.

1. 1. See detailed analysis here: http://spaces.telenav.com:8080/display/TNOSM/Correction+of+INEGI+Roadnet

1. CVU and IVLA datasets are riddled with overlapping edges. IVLA and CVU datasets have approximately 20,903 and 1,199 cases of two edges overlapping, respectively.

1. 1. Many of these edges have different road attributes (name, road type, etc)

i. Some could have totally different attributes

ii. Some could have the same name but different road type

1. There are some edges that are overlapped by more than 1 edge.
2. See detailed analysis here: http://spaces.telenav.com:8080/display/TNOSM/Investigation+with+Overlapping+Topology+Issues+with+INEGI+Data
3. CVU and IVLA geometries sometimes do not reflect reality.

1. 1. Example: Roundabout in reality, but intersection is highly generalized (“+” intersection)
   2. Example: Divided/dual-carriageway road in reality, but road is digitized as single-carriageway

1. All three INEGI datasets have been released at different times. Sometimes you would find roads in the IVLA dataset that are not in the CVU dataset, and vice-versa.

ALL IVLA and CVU cases to visualize in JOSM can be found on the following directory:

• http://pbf-server.mypna.com/non-osm/inegi/entire_country_overlapping_cases/

All test cases can be found here:

• overlap analysis attribute_details.xlsx

Cases

IVLA Overlap Cases
Main Link	Overlapping Links	Comments	Case PBF
gid = 503142	Main Link: Main Link Overlapping Links Image 503142 552394 503142 552424 503142 552520 503142 552369 503142 552775	Long segment overlapped by smaller segments. Which to choose?	http://pbf-server.mypna.com/non-osm/inegi/entire_country_overlapping_cases/ivla_main_gid_503142.osm.pbf
gid = 1608909	Main Link Overlapping Links Image 1608909 1624025 1608909 1624375 1608909 1624177 1608909 1624559	Different road ways overlapping one roadway. Very confusing. What to choose?	http://pbf-server.mypna.com/non-osm/inegi/entire_country_overlapping_cases/ivla_main_gid_1608909.osm.pbf
gid = 475614	Main Link Overlapping Links Image 475614 484271 475614 484904 475614 484264	Overlapping edges. What to do?
gid = 1241221	Main Link Overlapping Links Image 1241221 1241230	Two overlapping li