Works as follows:
Remove CITV from vehicles that do not possess it (Marid, IFV6 Panther as current examples). Add vision blocks for all episcopes/periscopes of a single combat position inside the vehicle, up to a maximum of seven (Forward + 3 left + 3 right) and select the VBs using the numpad keys (8 forward, 9,6,1 right, 7,4,1 left.)
This goes for driver and commander positions, but especially drivers since they are especially handicapped by lack of visual perceptiveness as players unless they turn out.