The San Francisco Bay Area is the world’s premier hub for innovation — home to Silicon Valley, the richest tech moguls and a host of billion-dollar start-ups.
But one feat of European engineering has left this high-flying region stumped: the roundabout.
The city of Hollister on the outskirts of Silicon Valley unveiled its first “turbo roundabout” in February in a nearly $15 million (£12 million) effort to improve safety at a dangerous junction.
Instead, the roundabout has resulted in a spike in accidents.
The first official report on its performance showed there was a crash every two and a half days on average, compared with one every eight days previously.
It seems locals are struggling to wrap their heads around how to navigate the roadway,