ER2 (Riga electric train, type 2; factory designation - 62-61) - a series of DC electric trains produced from June 1962 to August-September 1984 by the Riga Carriage Works (Latvian: Rīgas Vagonbūves Rūpnīca, RVR), which built them jointly with the Riga Electric Machine Building (Latvian: Rīgas Elektromašinbūves Rūpnīca, RER, supplied electrical equipment) and Kalinin Carriage Building (KVZ, supplied bogies, as well as at one time and car bodies) plants. By design, ER2 is a modernized version of the ER1 electric train, which differs from it in combined exits and more advanced electrical equipment. Since the second half of the 1960s, for more than 4 decades, it has been performing the main volume of suburban passenger traffic on the railways of the Soviet Union and the post-Soviet space.