During the 2014 F1 season the FIA began toying with a radio ban that would limit the information that teams could communicate to drivers during a race. This was to more accurately incorporate the sentiment that drivers should have to manage their own races, as reflected in Article 27.1 of the Sporting Regulations, which states that “the driver must drive the car alone and unaided”.
After tinkering with this for 18 months, a comprehensive ban was introduced for the 2016 F1 season. Teams have been given several races “grace period” to come to terms with the rules, during which time they have merely received warnings from race control. They were told that from the British GP onwards potential breaches would be referred to the stewards.