TransXChange is a UK national XML based data standard for the interchange of bus route and timetable information between bus operators, the Vehicle and Operator Services Agency, local authorities and passenger transport executives, and others involved in the provision of passenger information.

The format is a UK national de facto standard sponsored by the UK Department of Transport. The standard is part of a family of coherent transport related XML standards that follow UK GovTalk guidelines and are based on the CEN Transmodel conceptual model.

Although TransXChange is currently used mainly to exchange bus timetables, it may also be used for schedules for rail and other modes.

TransXChange is intended as a successor to the widely used ATCO-CIF format for bus timetables and was developed as a modernised representation of ATCO-CIF content, using an XML representation based on the Transmodel Reference model for Public Transport.

TransXChange is supported by all main UK suppliers of bus timetable systems and has also been used to exchange data for metro and other modes.

TransXChange provides a rich model based representation of a bus timetable that can be used for a wide variety of purposes. TransXChange documents can be used to exchange the following information:

TransXChange comprises:

Each version of TransXChange is versioned in line with UK GovTalk guidelines.