Technical Documents

This document has been produced by RTIG as a specification for a set of messages that can be communicated between bus-mounted devices and office-based systems, using a digital open protocol.

This document details the specification and methodology for the transmission of data from public service vehicles, such as buses and trams, to traffic signals and electronic public transport real time information displays.

Guidance on how to measure the quality and accuracy of real time information in the form of predictions that are provided to the customer. It also provides recommendations for the presentation of predicted information to the customer.

On behalf of the UK, RTIG has contributed to the definition of a CEN standard to define a “Service Interface for Real-time Information” (SIRI). It is intended to be used to exchange information between servers containing real-time public transport vehicle or journey time data.

These include the control centres of transport operators and information systems that utilise real-time vehicle information, for example, to deliver services such as travel information.

In 2016 RTIG established a Working Group to consider these issues.

It was quickly realised that the challenge has several dimensions, and separate advice was required on issues such as:

Bus Open Data Draft Statutory Instrument Summary of Key Dates and Data Formats

In the context of public transport, real time information (RTI) systems are those systems and services which enable passengers to have current information on the operation of their expected service – rather than merely hoping that the planned timetable is being met.

In the context of public transport, real time information (RTI) systems are those systems and services which enable passengers to have current information on the operation of their expected service – rather than merely hoping that the planned timetable is being met.

This document has been produced by RTIG as a specification for a set of messages that can be communicated between a bus management centre and a traffic control centre, in order to request and grant priority for buses at traffic signals.

This document is the result of the group’s wish to compile a NaPTAN best practice guide for local authority NaPTAN practitioners, which will enable them to make sure their teams (including a NaPTAN manager) are fully aware of the importance of NaPTAN and the correct procedures necessary for accurate data and, ultimately, accurate RTI.