Appendix B - Feature-type Prefixes

GDF

As of 2013.09 product releases, the following Feature-type dependent ID prefix changes are implemented in GDF files.
FEATURE GDF-AR TABLE PREFIX (START) PREFIX (END)
Water Element ARE 1100000000 1300000000
Census District ARE 200000000 400000000
Administrative Place C ARE 1500000000 1700000000
Company Ground ARE 1500000000 1700000000
Military Territory ARE 1500000000 1700000000
Other Land Use ARE 1500000000 1700000000
Woodland ARE 1500000000 1700000000
Administrative Place P ARE 600000000 800000000
Administrative Place T ARE 600000000 800000000
Index Area ARE 600000000 800000000
Neighborhood ARE 600000000 800000000
Built-up Area ARE 1700000000 1900000000
Address Area ARE 800000000 1000000000
Postal District ARE 1300000000 1500000000
Intersection CMP 200000000 400000000
Freeway Exit CMP 1300000000 1500000000
Water Element LIN 400000000 600000000
Center Point of Feature PNT 1100000000 1300000000
Building Footprint (Point) PNT 300000000 500000000
Traffic Sign PNT 300000000 500000000
Administrative Boundary Junction PNT 900000000 1100000000
Bifurcation REL 600000000 800000000
Implicit Turn REL 600000000 800000000
Priority Maneuver REL 600000000 800000000
Prohibited Maneuver REL 600000000 800000000
Restricted Maneuver REL 600000000 800000000

Shapefile and OSL

Note: The above prefixes are the ID prefixes for the GDF formats – for the Shape and OSL formats, there is an additional country-specific prefix added to the above.
See Shapefile IDs and OSL File IDs earlier in this user guide.

ID Intervals

Previously, the IDs had an interval of 100000000 – this now changes to 200000000. Therefore, there is now a start and end value for the prefix.

Example: The first digit of a GDF AS feature ID of an Index Area was previously 6 and will now be 6 or 7. (Previously, 600000000 to 699999999 - now 600000000 to 799999999)

Consequently, certain features (including, but not limited to, features located on dataset borders or GDF section borders) previously had a prefix starting with 1000000000. As these are partly overlapping with the new IDs of certain feature types (see table above) the 1000000000 prefixes have been removed and these features will now get the standard prefix depending on their feature type.

Apart from the ID prefix changes described here, the remaining part of the ID will remain stable, in line with the general feature ID stability rules.