The FIA is to stick with a single detection area for the two DRS zones at this weekend's European Grand Prix, following a successful debut for the concept in Canada last weekend.
With the DRS having been used in two areas in Montreal, the FIA has confirmed that it plans to have a similar double concept again in Spain - although it will not be used along the start-finish straight.
The first zone in Valencia will run from 285 metres after Turn 10, with the second zone starting 35 metres after Turn 14. The single detection area will be 130 metres before Turn 8.
The use of a single detection zone means that a driver who is behind a rival in the detection zone can use his DRS both to overtake in the first activation zone and then to pull out a gap at the second.
Although that policy caused some controversy in Canada, Renault's Nick Heidfeld was one of several drivers who backed the experiment by the FIA.
"You could argue that it is probably too much to have two DRS zones, but it is a good idea to at least try it once and then afterwards we will know," he told AUTOSPORT.
"We might not go back to it, we might. I think one would have been enough - but why not try?"