by fitting auxiliary ("Overall") tracks to the rear pair of dual tandem wheels. Additionally some vehicles were equipped with radio. All three of these ideas were subsequently used in all succeeding designs, including the BA-10. A version has been developed using an improved GAZ-AAA chassis. Also a prototype railway BA-IZD variant was created, but was not accepted for production. References Armoured cars of the interwar period Armoured fighting vehicles of the Soviet Union Military vehicles introduced in the 1930s