The 71-619 (colloquially KTM-19) is the modern Russian four-axle high-floor motor tramcar.

"KTM" means Kirov Motor Tramcar (Russian: Кировский Трамвай Моторный).

This abbreviation was the producer's official trademark before 1976, when a new designation system for tram and subway rolling stock was introduced in the Soviet Union.

The abandoned the KTM trademark still lives in everyday conversations of Russian tram workers and enthusiasts.

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