how can this functionally work with more than one cab? is it just that if there is a chance of proximity you stop one of them and make it wait? or you do not have more than one cab?,(reply>), I'm fairly certain it uses a block system, that is: If a segment of the elevator shaft is occupied by another cab, it routes the others around it. Of course, that only works with more than one shaft - otherwise, it's "just" like the block system of a rollercoaster, where you have to wait at certain points until the next block is cleared.<br><br>More than one cab only is very beneficial if you have 2 or more elevator shafts that are connected every... say, five or so floors. In that case, the computer that controls the traffic (whether it's a small computer within each cabin or one "controller" computer) moves cabins from one shaft to the next to overtake slower traffic that still occupies a segment.