Alexander Rossi and Will Stevens will test for Caterham at Silverstone this week along with the team's regular racers.
The duo are part of Caterham's Racing Academy and the 21-year-old Rossi has plenty of experience as he has taken part in several free practice outings on a Friday as the team's reserve driver.
"Silverstone will be the second time this year I've driven the 2013 F1 car and it'll be good to be back in the cockpit on a track I know very well," American Rossi said.
"We have a busy workload ahead of us and I'm pleased I can both add this as another step in my development as an F1 driver, and help the team continue the push for the second half of the F1 season."
The 22-year-old Stevens, who only joined the team in June, will get his first taste of F1 action at the Young Driver Test. He currently races for Strakka Racing in the Formula Renault 3.5 and is leading the standings.
"Since the announcement was made about me joining the Caterham Racing Academy I've settled in quickly with the F1 team and they've made every effort to help me prepare fully for my first run in a F1 car on day two of the test," Stevens said.
"I spent quite a bit of time last week in the simulator so I'm comfortable with most of the systems I'll be working with and, while obviously nothing can really prepare you for the first time you drive an F1 car, I'm as ready as I can be."
Rossi will be in action on Wednesday with Stevens taking over on Thursday. On Friday it's the turn of regular racers Charles Pic and Giedo van der Garde, who each run half a day.
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