Seven of the T4 line's 22 stations are underground[3] – these are stations Edirnekapı, Topçular, Rami, Uluyol – BEREC, Ali Fuat Başgil, Taşköprü and Karadeniz. All other stations are at-grade stations. The T4 line, even more than the T1 line, corresponds to a "light rail standards" line, in that its at-grade stations are made up of fortified platforms in the central median of the road, which allows for flat run-starts.