TR "Fourth-Gen" coaching stock

The TR "Fourth-Gen" coaching stock is a series of coaches introduced by TR during the Cold War. They vary on body design but all are known as "Fourth-Gen" and are built to replace the aging "Third-Gen" stock.

History
As TR started to modernise its infrastructure, the elderly "Third-Gen" coaching stock were starting to look dated (since they were introduced in the 1880s) and now needed replacement. Ashton Work began design a new carriage that is both larger, and capable of handling higher top speeds, which would be known as "Fourth-Gens". The first was ordered from UK carriage builder Metro-Cammell and had a 63'6" frame and fitted with Commonwealth bogies. This batch had ten new coaches while the twenty "Third-Gens" they replaced were scrapped. The second batch were produced by Ashton to a stainless-steel, matching those found on NSWGR & VR's 'Southern Aroura' express train in Australia. The ird batch were built by Metro-Cammell