Don’t Use Your Kids to Test Tesla’s Safety Features, NHTSA Warns

US auto-safety regulators have a message for Tesla Inc. owners intending to use their children to test automated-driving technology: Don’t.

The National Highway Traffic Safety Administration said it uses controlled procedures and “it could be highly dangerous for anyone to attempt to test vehicle technologies on their own.” The statement comes in response to recent tweets from Tesla owners appearing to show a child used in a test of a vehicle’s so-called Full Self Driving mode.

“No one should risk their life, or the life of anyone else, to test the performance of vehicle technology,” the agency said. “Consumers should ...