F1 has increased the weight limit by six kilograms for 2018 to accommodate the Halo. But this wasn't the only tough task designers were faced with when creating the new cars, as it also impacts the aerodynamics of the car, too.
"In addition to the challenges posed by the Halo for the mass of the car and the strength of the chassis, there is also a significant aerodynamic challenge. The basic Halo is a standard part - identical for every team.
"This unadorned, round tube is quite bad aerodynamically, so we are all permitted to modify the Halo in a way that will be individual for each team. We are permitted to fit an aerodynamic fairing around it, which gives us a certain amount of scope to mitigate the effect it has on the aerodynamics of the car.
"What we are aiming to do here is to make sure the wake of the Halo does not affect the smooth running and powerful performance of the engine, and to make sure it is designed so that it does not damage the behaviour of the rear wing."
While the Halo's introduction has divided opinion, the aim and target of the device is clear to see and it's an important step forward in driver safety.
"The Halo doesn't remove all risk from Formula One - nothing can. And, in fact, this design in small ways increases certain, specific risks," James says.