Unequivocally, yes. They are absolutely dangerous.
Anything that takes attention away from driving increases danger.
Are they more dangerous than older interfaces? My feeling is overwhelmingly yes, but I would be willing to see a study or hear arguments that some touchscreens are an improvement. A touch interface is fine (not great) as long as it never changes. As soon as you have to search for a control or menu you are dividing your attention away from driving.
Anything that takes attention away from driving increases danger.
Are they more dangerous than older interfaces? My feeling is overwhelmingly yes, but I would be willing to see a study or hear arguments that some touchscreens are an improvement. A touch interface is fine (not great) as long as it never changes. As soon as you have to search for a control or menu you are dividing your attention away from driving.