The previous rules on energy management mandated that, for every minute spent behind the safety car or during a full-course yellow, one kilowatt-hour of energy would be removed from the team's useable amount to nudge the teams into managing their energy more efficiently.
But in the case of Valencia last year, the lengthy period spent behind the safety car on top of an additional lap not accounted for by several teams forced a number of cars into retiring having run out of energy.
