The Canadian Grand Prix at the Circuit Gilles Villeneuve will only feature a single DRS zone this year.
Last year's race in Montreal marked the first time that the FIA opted for two zones, with the first coming on the run to the final chicane and drivers then allowed to use the system again on the start-finish straight.
However, with some complaints that it made overtaking too easy last year, the second DRS zone has now been dropped.
As such drivers will only be allowed to use the DRS – or Drag Reduction System to give it its full name - on the run to the final chicane. This zone has also been shortened by 50 metres.