Only six of the 10 F1 teams will run 2015 race drivers during Tuesday's Pirelli tyre test in Abu Dhabi.
Pirelli requested from the start that teams utilise their race drivers for the test on 1 December – or failing that a third driver who has extensive experience of this year's tyres.
Mercedes will rely on Pascal Wehrlein, McLaren on Stoffel Vandoorne, and Lotus on Jolyon Palmer – arguably the only one of the three who properly fulfils Pirelli's requirement for a third driver who has done a lot of miles this year.
Sauber, Force India and Manor have taken the opportunity to sell the seats (in the first two cases only for half the day) in order to offset the cost of the test, which has to be covered by the teams. Pirelli is only paying for the hire of the circuit.
Although teams could yet change their plans, the full list that Pirelli is currently working from is as follows: