Ankara Metro and no seats at the front or rear of each car. In 2012, a large order of 324 subway cars from CRRC Zhuzhou was placed to supplement the fleet on line M1 and for use on the newer M2, M3 and M4 lines. Construction of the following metro lines are under construction or planned: Ankara Metro The Ankara Metro () is the rapid transit system serving Ankara, the capital of Turkey. At present, Ankara's rapid transit system consists of five metro lines – the "Batıkent Metrosu (M1)", the "Koru Metrosu (M2)", the "Törekent Metrosu (M3)" lines and the new "Keçiören
History of Ankara tetrarchy, a system of multiple (up to four) emperors introduced by Diocletian (284-305), seems to have engaged in a substantial programme of rebuilding and of road construction from Ankara westwards to Germe and Dorylaeum (now Eskişehir). In its heyday, Roman Ankara was a large market and trading center but it also functioned as a major administrative capital, where a high official ruled from the city's Praetorium, a large administrative palace or office. During the 3rd century, life in Ancyra, as in other Anatolian towns, seems to have become somewhat militarised in response to the invasions and instability of the town.