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Future driverless cars could soften on impact to protect squishy pedestrians

When you take a human driver out of the equation, self-driving cars suddenly have complete responsibility for the safety of all users on the road. That includes pedestrians, which is why the AI fork of the trolley problem is so fascinating. 

In those moments where a collision with a human is inevitable, is there anything else the manufacturers of driverless cars can do to help prevent the loss of human life? Waymo, the autonomous car company that includes Google among its Alphabet-owned stablemates, is looking into revolutionary design ideas to tackle the problem.

In a newly-uncovered patent from 2015, it describes a system that would see its vehicles 'soften' ahead of an identified imminent impact with a pedestrian.

Weighing up the safety options

The system would use a collection of springs and cables to reduce the rigidity of bumpers and panels, should the vehicle's computer system spot a potential collision about to occur. The theory behind the patent suggests this would be a safer surface for the human to hit at speed.

However, what does this mean for the safety of the passengers of the vehicle? In the event of a crash, the integrity of the body of the car is essential to protecting passengers. Waymo's idea would seem to go against years of accepted knowledge around crumple zones and the like.

But it's interesting to see Waymo considering safety from all angles, especially beyond the AI ethical concerns.

Gerald Lynch

Gerald is the Executive Editor for TechRadar, taking care of the site's home cinema, gaming, smart home, entertainment and audio output. He loves his gaming, but don't expect him to play with you unless your console is hooked up to a 4K HDR screen and a 7.1 surround system. Based out of TechRadar Towers, London, Gerald was previously Editor of Gizmodo UK. He dreams of the day when he can pop on a VR headset and meet Lawnmower Man-era Pierce Brosnan. Sadly, Pierce doesn't share the dream.