Roundabouts have been in use in the UK for over 50 years, and today are seen as a natural part of the landscape – something as intuitive to use as a postbox. Everyone knows how to use them, they’re just intuitive to use, surely?
Apparently not, judging by this BBC article on the introduction of roundabouts to the USA and hundreds of American roundabout videos on YouTube (example below) .
It’s easy to fall into the trap of assuming certain knowledge is common to everyone – that we all understand the basic concepts. This isn’t always the case, and things may not be intuitive. They may be easy to use, yes, but there is often a need to familiarise users at the start. This is true for software development as it is for roundabouts.