The National Highway Traffic Safety Administration said it has opened an investigation into nearly 2.9 million Tesla vehicles after reports of traffic safety violations linked to the electric car maker's Full Self-Driving system, according to a filing on the government regulator's website.

The probe by the agency's Office of Defects Investigation involves Tesla vehicles equipped with "FSD (Supervised)" and "FSD (Beta)" versions of the the company's self-driving systems. Both require "a fully attentive driver who is engaged in the driving task at all times," NHTSA said in a document filed as part of the probe.

Reports of traffic violations include vehicles operating with FSD driving through red traffic signals and initiating lane changes into opposing traffic.

NHTSA has received reports o

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