McLaren technical director Paddy Lowe has questioned what impact a double DRS zone will have on racing in the Canadian Grand Prix this weekend.
Montreal will be the first venue where the overtaking aid has been utilised twice in a racing environment, with the first DRS zone coming on the final straight heading into the chicane with drivers then able to use the system again on the start-finish straight.
However, while the FIA clearly feels there is a benefit from having two DRS zones, Lowe said he wasn't sure if both were needed to have an effect on overtaking at the Circuit Gilles Villenueve.
“I don't honestly know the answer,” he said in a Vodafone McLaren Mercedes call-in. “It's something the FIA have developed as a solution. This is the first race that we've had the system fully commissioned in order to run two sectors. They clearly feel that will assist overtaking, as that's the point of DRS. Whether it does or not remains to be seen.
“I think our own analysis, which hasn't been extensive I must admit, seems to suggest that it may not particularly help. I think the role of DRS will play out mostly in the initial straight from the hairpin, and that the second straight may just aid with performance. I mean in theory, if you've overtaken on the first straight, ironically the guy ahead will be able to continue to use his DRS on the second straight, even though he's only just overtaken, to open up a bigger gap.
“I think we'll just have to see how that pans out.”
Valencia will also feature two DRS zones for the European Grand Prix.