Two DRS zones for second Austin race

Governing body the FIA has added a second DRS zone to the Circuit of The Americas for this year's United States Grand Prix, following a trend set throughout the season.

The first zone, which has been retained from 2012, is controlled by a detection line just before Turn 11, with the activation area running between Turns 11 and 12. The second area, featuring a detection point after Turn 19, comes along the main straight.

Only the Monaco and Japanese Grands Prix have featured one DRS zone this year.