This page will be updated during the day with news and developments from the track.
The first of three days of preseason testing is underway in a sunny, hot and windy Bahrain.
All ten teams are present for what is expected to be a busy three days and the only chance to test the cars with Pirelli's new tyres ahead of the first race in two weeks' time.
For a full guide of what to expect from testing this year, click here.