TIH Principles Checklist

From TIHwiki

Contents 1 The Charging Mechanism should be clearly described 2 The Authentication Level should match the value of the data 3 Data should be published using XML with compression 4 Data and Publication Models should be described adequately 5 For location referencing use TPEG-Loc or at least WGS84

The Charging Mechanism should be clearly described

• Each Information Publisher must clearly identify whether or not there is a charge for receiving their data.

The Authentication Level should match the value of the data

• Where authentication is used, the use of SSL/TLS is recommended for protecting HTTP data services and authentication over IIOPS for protecting CORBA data services.
• It is recommended that authentication should be used for protecting commercially valuable data services.
• Services which generally make data available free of charge may require only minimal or no authentication.

Data should be published using XML with compression

• Information Publishers should support HTTP GET of XML using compression where applicable.

Data and Publication Models should be described adequately

• Information Publishers should supply an appropriate description of the data provided and its quality attributes.
• They should also supply an appropriate description of the data concepts used and the way they are assembled.
• Data models should be fully described using UML. (Models already exist for many standards, including OTAP, TPEG and UTMC).
• Publication models should be registered through the Highways Agency Technology Pilot ITS Metadata Registry.

For location referencing use TPEG-Loc or at least WGS84

• Use TPEG-Loc in most cases and for multi-modal information.
• Use WGS 84 coordinates when using limited bandwidth carriers.