The vehicle was assembled by the Podolsk Machine Factory named after S. Ordzhonikidze in July 1937 .
The vehicle was was successfully tested at the NIIIT Proving Ground ( 85 bridge layings were performed and 70 light tanks passed over the bridge ) .
The vehicle was assembled by the Podolsk Machine Factory named after S. Ordzhonikidze in July 1937 , and was successfully tested at the NIIIT Proving Ground ( 85 bridge layings were performed and 70 light tanks passed over the bridge ) .