Of all trucks currently operated in Russia, 35% (1.33 mio) were produced in the USSR, i.e. prior to 1992.
Most of those vehicles were manufactured in Russia and include 400К trucks made by GAZ, 354К by KAMAZ, 300К by ZIL (no longer in operation), 107К by SAZ, 54К by URAL.
Besides, still used in Russia are 72K MAZ and 1K BelAZ trucks (Belarus), 34K KrAZ (Ukraine) and 9K KAZ (Georgia) vehicles.