Self-driving sector contends its cars can prevent many more crashes than insurance study says

(Reuters) - Companies working on self-driving vehicles have criticized an insurance industry study suggesting that only a third of all U.S. road crashes could be prevented by driverless cars, arguing that the study has underestimated the technology's capabilities.The study by the Insurance Institute for Highway Safety (IIHS), released on Thursday analyzed 5,000 U.S. crashes and concluded that likely only those caused by driver perception errors and incapacitation could be prevented by..