Mercedes technical boss James Allison says the new controversial halo device could withstand the weight of a double-decker bus.

Allison on halo device

Allison on halo device

The system has been made mandatory for the forthcoming season - despite opposition from drivers, teams and fans - and Allison has been explaining the problems faced by the teams.

He says the titanium head protection system has posed big challenges for teams due to its weight and affect on the aerodynamics of cars.

'We had to strengthen the design of the chassis so it would be able to take roughly the weight of a London double-decker bus sitting on the top of this halo,' Allison said in a video released by Mercedes. 'To make sure it would be strong enough to withstand the type of event that it's designed to protect the driver's head against.'


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