scope:

The scope of this part is:

- to establish a working terminology for crossings with moveable parts, which means crossings with moveable parts to close the gap of the running edge, and their constituent parts, and identify the main types; 

- to list the minimum informative requirements for the manufacture of crossings with moveable parts and/or their constituent parts; 

- to formulate codes of practice for inspection and tolerances for crossings with moveable parts and/or their constituent parts; 

- to establish the limits and extent of supply;

- to list the method by which crossings with moveable parts and their constructional parts should be identified and traced; 

- to list the different and varying ways by which crossings with moveable parts can be described, using the following parameters: 

- geometry of crossings;

- types of construction; 

- performance requirements; 

- design criteria;

- tolerances and inspection.