Formula One team will participate in tests during the weeks following both the Spanish Grand Prix and British Grand Prix in 2016, according to Autosport.
Both tests will take place on the Tuesday and Wednesdays following the respective races.
The test at Barcelona’s Circuit de Catalunya is on May 17-18, and the session at the Silverstone Circuit is on July 12-13.
Barcelona was used as a test site in 2015 and Silverstone hosted one in 2014.
F1 regulations in 2016 allow just two team test of no more than two consecutive days.
Barcelona will be getting a workout this year, with two preseason tests set at the facility for February 22-25 and March 1-4.
The F1 season begins on March 20 with the Australian Grand Prix.