WASHINGTON, Dec 22 (Reuters) - U.S auto safety regulators said Wednesday they have opened a formal safety investigation into 580,000 Tesla vehicles sold since 2017 over the automaker"s decision to allow games to be played on the front center touchscreen. The National Highway Traffic Safety Administration (NHTSA) said its preliminary evaluation covers various 2017-2022 Tesla Model 3, S, X, and Y vehicles. This functionality, referred to as “Passenger Play,” "may distract the driver and increase the risk of a crash," the agency said. NHTSA said it has "confirmed that this capability has been available since December 2020 in Tesla "Passenger Play"-equipped vehicles." Before then, the game feature "was enabled only when the vehicle was in Park." NHTSA said in a statement on Wednesday it was "committed to ensuring the highest safety standards on the nation’s roadways." The agency said the decision to open the investigation was based on reports "Tesla’s gameplay functionality is visible from the driver"s seat and can be enabled while driving the vehicle." The Governors Highway Safety Association said on Wednesday it was pleased with NHTSA"s Tesla safety investigation "and want to remind all drivers to be alert and focused on the road when you"re behind the wheel." Tesla did not immediately comment. NHTSA said it would "evaluate aspects of the feature, including the frequency and use scenarios of Tesla "Passenger Play"." Earlier this month, the New York Times highlighted the game feature, prompting NHTSA to say it was in discussions with Tesla about its concerns. The agency noted earlier in December that distracted driving accounts for a significant number of U.S. road deaths - 3,142 in 2019 alone. Safety advocates have said official figures underestimate the problem because not all drivers involved in crashes later admit they were distracted. The Times said the Tesla update added three games - Solitaire, a jet fighter and conquest strategy scenario - and said that vehicles have warnings reading: "Playing while the car is in motion is only for passengers." The paper said the game feature asks for confirmation that the player is a passenger, though a driver could still play simply by pressing a button. In 2013, NHTSA issued guidelines to encourage automakers "to factor safety and driver distraction-prevention into their designs and adoption of infotainment devices in vehicles." The guidelines "recommend that in-vehicle devices be designed so that they cannot be used by the driver to perform inherently distracting secondary tasks while driving," the agency said. The agency in August opened a safety investigation into 765,000 Tesla vehicles over its driver-assistance system Autopilot after a series of crashes involving the system and parked emergency vehicles. A preliminary evaluation is a first step before NHTSA decides whether to upgrade a probe to an engineering analysis, which must happen before the agency can demand a recall. NHTSA said it received a complaint in November about the game feature from a Tesla Model 3 driver in Oregon, who said: "Creating a dangerous distraction for the driver is recklessly negligent." On Nov. 29, Daimler"s (DAIGn.DE) Mercedes-Benz recalled 227 U.S. vehicles - 2021 model year S580, 2022 EQS450, EQS580, and S500 -- because the vehicle infotainment systems "might allow activation of the television and internet display while driving, causing a distraction for the driver."