much worse, as there are arguments that it would be more practical to disassemble the line and replace it with two-three station extension of the STL. Despite the shortcomings, one positive aspect of the BL is that the 81-740/741 trains, serial production of the rolling stock, have gained wider usage and are now dominant on the Filyovskaya line, having replaced all of the older trains and is now growing its share of the Arbatsko–Pokrovskaya line. See also Medium capacity system References External links Butovskaya Line, Moscow Metro official site Moscow Metro lines Railway lines opened in 2003