LM stands for «Ленинградский Моторный», which is a motor car made in Leningrad.
LM-68M trams work in St. Petersburg LM-68M is a wide gauge (1,524 mm (5 ft)) high floor, continuously welded four axle tram.
Its body differs from the LM-68 body by an emphasized frame and removed glass on the roof, which created a lot of problems in use.
The LM-68M tram has 35 seats and is capable of transporting 206 passengers when fully loaded.
The tram is capable of working as a multiple traction system.