You might have noticed that several stations now have moving-image adverts on a 10-foot-high screen on the platform wall. It's all thanks to cross-track projection (XTP).
You might also suspect that this could possibly distract the driver, or indeed the passengers, causing potential safety problems. But rest assured, LUL management have passed it as safe, so there's no need to worry.
Management carried out 'extensive trials and tests' on the Victoria line before extending it to other locations. We can not confirm rumours that this consisted of a DMT watching the screens at Euston for a whole 15 minutes. We might also note that Victoria line trains run automatically, whereas on other lines, the driver has a more 'hands-on' role and therefore the consequences of distraction might be more severe.
But why worry? the danger of distraction is supposed to be dealt with by the projector switching off as the train arrives at the platform. Unfortunately, this 'failsafe' mechanism has repeatedly failed to be safe.
Why do management spend so many hours and flatten so many rainforests in pursuit of the golden prize of 'SPAD reduction', while taking risks with a system which could well cause SPADs? Anything to do with the advertising fees? You think?