Russian train surfing fans began to name themselfes as "Zatsepers"(from the Russian word "Зацепиться-Zatsepitsya" translated as "to catch on").The train surfing became a something like extreme sport discipline for them. Russian train surfers also name their popular hobby "Zatseping".From the beginning of 2011, Russian train surfers made a several rides on outside of a high-speed Siemens Velaro train "Sapsan", the fastest train in Russia.[7][8][9][10] In 2011, over 100 people were killed or seriously injured in Russia because of train surfing or climbing on roofs of standing trains too close to overhead catenary wires; a few dozen children train surfers were killed.[11]