Specifications required a light and mobile vehicle that could change positions quickly, especially when close to enemy units, roughly 500-1000 m away, but it also had to at least match the speed of enemy armored units.
The Komsomolets tractor was intended to be the design that would give the Red Army motorized artillery troops, and therefore the required flexibility of such a unit.
Although the Pioneer could reach speeds of 50 km/h (30 mph), it still had the aforementioned problems, and the driver was not thought to be well protected enough.
Despite NATI ordering two modifications to resolve these problems, the B1, and B2, they turned out to be even worse designs overall, and were never put into mass production.
Tests on this vehicle began in August, 1937, and finished in November.
It was found that a fully loaded vehicle could reach speeds of 15-20 km/h (9-12 mph), which was considered quite fast for this type of tractor.