The Spanish Grand Prix will have one of the longest zones for the Drag Reduction System seen so far.
The circuit’s official Twitter account said the zone where drivers can use DRS during the race will be 830m long. It is expected to be situated on the start/finish straight.
The FIA reduced the length of the DRS zone at the Chinese Grand Prix from 902m to 752m after concerns were raised that it would make overtaking too easy.
Concerns were also raised at the frequency of overtaking in the DRS zone during the Turkish Grand Prix, and the ease with which drivers could overtaking using their adjustable rear wings.
The Circuit de Catalunya has a reputation for being one of the most difficult F1 circuits to overtake on.
Update: The FIA have produced an image showing where DRS can be used during the race.
Drivers will be able to activate it as they cross the start/finish line, providing they are within one second of another car at the detection point between turns 15 and 16:
2011 Spanish Grand Prix
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Image ?é?® Force India F1 Team