Some experts are turning their attention to enhanced vehicle technology, such as automatic braking systems. This involves sensors on a vehicle that can detect a crash, warn the driver and apply brakes if the person behind the wheel does not take action quickly enough.
This safety feature may have actually saved lives in the 2016 Berlin Christmas market truck attack, according to German authorities.
Twelve people were killed and at least 48 injured when the driver plowed through a crowd of people. But the number of victims could have been higher, were it not for the automatic brakes that were installed in the truck, investigators found.
The system stopped the truck after about 80 metres, after detecting obstacles but no response from the driver. According to the report, it is possible for the driver to override the braking system; however, the technology was deployed during the attack.