The hull and turret were well protected against contemporary anti-tank weapons but the tracks and running gear were exposed and more vulnerable than on tanks that had protected tracks. The lack of a gun with anti-tank capability severely limited its utility on the battlefield. Besides operating the machine gun, the commander had to direct the driver and operate the radio. There being no room in the turret for the radio, it was placed in the hull; the commander had to duck down inside and lie almost prone to operate it. The driver's position was equally cramped and the turret could not be traversed forward while the driver's hatch was open. The top speed of 8 mph (13 km/h) was thought to be sufficient for supporting an infantry advance.