Formula One's drivers are split on the Shield cockpit protection device the FIA is hoping to introduce for the 2018 season.
This week the decision-making Strategy Group agreed to ditch its work on the Halo in order to prioritise the testing of a new concept, known as Shield. The new design is a compromise on the Aeorscreen tested by Red Bull in 2016 and features a see-through screen which covers the front of the cockpit but leaves most of the driver's head visible.
The push for cockpit protection has gained momentum since Justin Wilson was killed by a flying piece of debris during a 2015 IndyCar race.