This weekend’s Canadian Grand Prix will see two DRS zones instead of one, according to the FIA.
The first year that DRS was used in Montreal, there were two zones – one before Turns 13 and 14 (the final chicane) and one on the start/finish straight.
The DRS was reduced to one zone in 2012. But the problem with having only one detection point was that overtaking was too easy a task. A number of passes were made in the first zone and the drivers tended to gain a large advantage over the rest of the lap.
Hence, the FIA has decided to go with two zones this year. The first zone is located 55m before the right-hand kink known as Turn 12, making it 113m shorter than it was in 2011 and 63m shorter than last year.
The second zone is again after Turn 14, and with an activation point 70m after the corner, it is just one metre shorter compared to 2011.
Source: ESPN F1