12.3.1
Cross-reference information is used in level 3 LSGs. All ESUs on a type 3 or type 4 Street must have a cross-reference to a type 1 or a type 2 Street.
12.3.2
Only the cross-references to the latest version of Streets or ESUs (open or closed) must be present in the DCA Street Update.
12.3.3
A type 1 or type 2 Street must not be cross-referenced to another type 1 or type 2 Street, except where a Street is STATE = 5 – Street for addressing purposes only or a street is overlapping and a part maintenance responsibility with the Street outside scope of EToN is present.
12.3.4
If a Street has two classifications, it must be recorded as one type 1 Street Record for its entire length, and two type 3 Streets for the length of the two classifications.
12.3.5
These classifications must be cross-referenced at the ESU level. For an example see Figure 41. This example includes the type 11, 12, 13 and 15 Records (not all data is shown, this is an example for this purpose only).
12.3.6
If a Street changes classification at a point other than a junction, split the ESUs at that point so that type 3 Street Data is correctly assigned.
12.3.7
Street cross-reference data is transferred to GeoPlace within the data transfer file as a type 12 cross-reference Record, as defined in the DTF current version. For details of the current version see, Related Documents
Figure 41 - Dual classified Streets