Formula One is scrapping the controversial awarding of double points to the winner of the final race of the season - but it is introducing a virtual safety car in the wake of Jules Bianchi's crash for 2015 which could see a record 21 races.
The decisions - which also include rescinding standing restarts, a 10 second penalty for minor infringements in a race, and revised power unit penalties - were made by the World Motor Sport Council of the ruling body FIA at a meeting on Wednesday in Doha.
The FIA decision on double points follows an agreement last week of the sport's Strategy Group and F1 Commission.
Double points for the last 2014 race was initiated by F1 boss Bernie Ecclestone to make the sport more interesting until the end of the season after Sebastian Vettel ran away with the title in 2011 and 2013.
It was unpopular with fans and teams but did not affect the 2014 title race in which Lewis Hamilton beat Mercedes teammate Nico Rosberg for a second career title last month - although Rosberg could have benefited from it.