The electric-car maker says it happens rarely and at speeds below 10 mph. But the disclosure—in response to a US senator's questions—occasioned a call for more transparency.

Tesla reveals its robotaxis can be remotely controlled by human operators in rare cases, raising new questions about autonomy ...

The revelation comes from a March 26 response to Markey's investigation into how autonomous vehicle companies use remote assistance operators.

Tesla CEO Elon Musk has indicated the company is on track to begin its driverless ride-hailing service in Austin, Texas in June. It is hiring plenty of remote operators who will monitor the ...