Ford has been developing its own means for self-driving cars to communicate their intent, but it also knows that fragmentation could be a huge problem in the autonomous driving world. How are you supposed to know what cars are doing when each one has a different visual cue? Accordingly, Ford has issued a memorandum of understanding that asks the industry to create a signalling standard for cars capable of at least SAE Level 4 automation (that is, they can handle all driving tasks under some conditions). It hopes the exchange of standards will lead to a common language that human drivers and pedestrians will understand, regardless of where they live or how tech-savvy they may be. The memorandum comes alongside existing talks with the International Organization of Standardization and the Society of Automotive Engineers to create a common interface.