Detailed structure and explanatory notes
CPC Ver.1.0 code 53222Structure
This subclass includes:
- highway and railway tunnels
- tunnel constructions and other underground constructions related to underground railway traffic
This subclass does not include:
- vehicular and pedestrian underpasses, cf. 53211
- tunnels associated with mining operations, cf. 53261
This code corresponds to the following:
ISIC Rev.3 code(s) 4520
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