http://www.autosport.com/news/report.php/id/112930
NEW WARNING LIGHT SYSTEM FOR 2014
The FIA has already moved to minimise the risk of problems of drivers being caught out when the engines automatically cut throttle to help reduce fuel use.
A new warning light system has been introduced for 2014 - which alerts pursuing cars when fuel maps have been activated that means cars are not running at full performance.
Whiting explained: "If the torque management system on the car decides that it want to go into fuel save mode then a system kicks in.
"If you are flat out on the straight and you are above a certain threshold - above 95% throttle for more than one second, and you are above 180km/h and you see a 120KW torque reduction - it flashes the rear light for a second to warn the driver behind."
Not all drivers are convinced about the benefits of the system yet - and tweaks could be made in the future.
This system only works on the automatic fuel saving modes, and does not cover the situation of drivers suddenly adopting 'lift and coast' tactics.