Unfortunately, that doesn't always seem to be the case. I've had paniced green crews drive their tanks up on to a ridge from protected hull down positions behind the ridge and into enemy fire, where, of course, they get slaughtered instead of just reversing back behind the slope for protection. There were no obstructions or fires blocking their path to rear either. They just suddenly go "stupid" and more or less advertise themselves as willing targets.
"HERE I AM KILL ME!"
This should really be looked into by Battlefront. </font>