|About us | Contact us |Site Map|
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
Click here for complete correspondences for this code.
Click here to see the alphabetical index for this code
Would you like to leave some feedback?
(on this code, this classification, the site in general or any other issue)
Then drop us a line at CHL@un.org.