Release 2.0b NaPTAN, & NPTG defines a stable version of the NaPTAN stop model that is compatible with TransXChnage 2.0e 

It also sets out an evolutionary path to migrate both XMl & CSV schemas from NaPTAN 1.1 
 
    It shares common NaPT data types with the TransXChange 2.0e release which is released simultaneously 

    It has been tested against JAXB and MS validators.
     
    A revised version of the NaPTAN Schema Guide is available with extensive revisions.

The following is a list of the main changes in 2.0b 


Revisions
    * Full compatibility with TransXChange 2.0e features.

    * NPTG divided into two schemas NPTG & NPTG Discovery. both XML & CSV 
           Place CAllCentres AREPS & Web Application discovery in NPTG Discovery 
    
    * And PrincipleStop relationship for locality.
    
    * Add Stop Validity Period and Stop transfer support
    
    * Qualifier name support added for localities 
 
    * Add plusbus zones
            
    * Add RTIG Cleardown element to StopPoint
    
    * Revise CCH to be GCCH Stop Area type
        
    * Make bearing a required property of Bus stops only
    
    * Add constraint to stop use of  , and () in locality names and stop descriptors 
     


Fixes 
   Fix undecidable Location representation