The FIA has approved changes to the 2020 Formula 1 regulations that will prohibit teams from being able to use screens during testing.
Formula 1 teams are not allowed to cover the garages with screens during grand prix weekends but that regulation has not previously extended to testing.
During testing teams have usually covered cars, and garages, with screens in order to try and protect developments from being observed by potential rivals.
On Wednesday the FIA’s World Motor Sport Council met to approve changes.
It determined that changes to the regulations include “wording to prevent teams from covering their cars during winter testing, in order to make these events more appealing to the media and fans.”
Teams will still be allowed to use screens in the event of a damaged car being returned to the pit lane.
Formula 1 has expanded its coverage of pre-season testing in recent years, with the entirely of last season’s opening Barcelona action broadcast live on its own TV network.
In 2020 Formula 1 will broadcast all six days of testing live through its subscription service.
Elsewhere it was confirmed that a physical chequered flag will return to be used as the end-of-race signal in 2020.
Officials switched to using an electronic panel board in 2019 but a glitch in Japan meant it was shown one lap early, which affected the result at the foot of the top 10 in the wake of Sergio Perez’s clash with Pierre Gasly.
It came after the chequered flag was erroneously shown prematurely at the 2014 Chinese Grand Prix and 2018 Canadian Grand Prix.
Should a repeat occur it would still mark the official end of the race.