ORCATS (Operational Research Computerised Allocation of Tickets to Services) is a large centralised legacy

computer system A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations ( computation) automatically. Modern digital electronic computers can perform generic sets of operations known as programs. These prog ...

used on passenger railways in Great Britain. It is used for real time reservation and revenue sharing on interavailable tickets between train operating companies (TOCs). The system is used to divide ticket revenue when a ticket or journey involves trains operated by multiple TOCs. The system was owned by British Rail, and is now managed by the

Rail Delivery Group The Rail Delivery Group (RDG), previously the Association of Train Operating Companies, is the British rail industry membership body that brings together passenger and freight rail companies, Network Rail and High Speed 2. History From 24 Oc ...

History

Before nationalisation, a similar function was carried out by the

Railway Clearing House The Railway Clearing House (RCH) was an organisation set up to manage the allocation of revenue collected by pre-grouping railway companies for the conveyance of passengers and goods over the lines (or using the rolling stock) of other compani ...

References

Centralized computing Information technology organisations based in the United Kingdom Legacy systems Passenger rail transport in the United Kingdom Public transport information systems {{UK-rail-transport-stub