The AB 40 armoured vehicle ended up being devised for the Italian Royal Army in the late 1930s, to displace the old Lancia models. The vehicle ended up being innovative during the time, being a four-wheel drive with separate suspensions and two driving jobs. The armoured automobile was fitted with two 8mm machine guns in turret and another in the backside regarding the hull, but had been only integrated small figures for assessment purposes, as development of the greater amount of advanced AB 41 was already underway. A number of the models had been changed into tracked patrol cars due to the fact wheels could be replaced with rail wheels and general stopping systems. Many of these cars were used in Yugoslavia by the Italian forces and, later, by the Germans.