Yuki Tsunoda, Pierre Gasly, Kevin Magnussen and Mick Schumacher have all escaped punishment following trips to the stewards' room after the Australian Grand Prix.
Five drivers, including Fernando Alonso, were summoned to Race Control following an eventful afternoon at the Albert Park Circuit.
Tsunoda, Gasly and Schumacher were all alleged to have driven "unnecessarily slowly, erratically or in a manner which could be deemed potentially dangerous" whilst behind the Safety Car. It came after Schumacher almost crashed into the back of Tsunoda during a Safety Car period.
Magnussen, meanwhile, was alleged to have pushed Alonso off the track during a late-race battle between the two drivers.
However, all drivers have been cleared of any wrongdoing, with the FIA deciding that no further action was necessary.
Viewed by others:
Gasly keeps points-scoring finish
The decision means that Gasly keeps hold of his ninth-place finish as the only driver under investigation to have taken the chequered flag inside the points.
Schumacher and Magnussen finished P13 and P14 on a disappointing day for Hass, with Tsunoda following them over the line in P15.
Alonso, meanwhile, finished well outside the points in Melbourne, despite demonstrating the pace to battle at the front during qualifying.
Video: The 10 most bizarre F1 cars of all time
RacingNews365.com looks back at some of the strangest and most unique Formula 1 car designs from over the decades.