This Technical Specification describes the Public Transport Information (PTI) Application, which is intended to
cover all modes of public (i.e. collective) transport as well as inter-urban and intra-urban travel. The
application is designed to allow the efficient and language independent delivery of public transport information
directly from service provider to end-users.
The term ¿application¿ is used in TPEG specifications to describe specific applications, such as in this case
the public transport information application, which comprises three information containers: the message
management container, the application event container and the TPEG-location container. The first two
containers are fully described herein and the TPEG-location container is described in CEN ISO/TS 18234-6.
Each TPEG Application (e.g. TPEG-PTI) is assigned a unique number that is called the Application
IDentification (AID). An AID is defined whenever a new application is developed. The AID is used within the
TPEG-Service and Network Information Application (CEN ISO/TS 18234-3) to indicate how to process TPEG
content and allows routing of data to an appropriate Application decoder.
AID = 0002 (hex) is assigned to the TPEG-PTI application, described in this specification.
The TPEG-PTI application aims at describing ¿legs¿ of a journey also described as ¿rides¿ by other
methodologies. However, it is important to note that TPEG-PTI is not limited to describing single services,
because it also allows the more general description of route, service and area-wide problems.
Public (or collective) transport information is usually consumed in one of four principle ways as follows:
- Leader board information as used at stations or terminals;
- A report on the state of a network;
- The description of an individual service;
- As a news flash report.
The elements needed to provide information for any one of the four end-user presenta (...abbreviated)