Federal auto safety regulators are investigating why Tesla has repeatedly broken rules requiring it to quickly tell them about crashes involving its self-driving technology, a potentially significant development given the company’s plans to put hundreds of thousands of driverless cars on U.S. roads over the next year. The National Highway Traffic Safety Administration said in a filing on Thursday that Tesla’s reports on “numerous” incidents involving its driver assistance and self-driving features were submitted far too late — several months after the crashes instead of within five days as required. The probe comes two months after the electric vehicle maker run by Elon Musk started a self-driving taxi service in Austin, Texas, with hopes of soon offering it nationwide. The company also ho

See Full Page