Mark Miles, CEO of IndyCar's parent company Hulman & Co does not think that the 'halo' head protection system would work in IndyCar.
With Formula One set to introduce head protection for 2018, the 'halo' is the most likely option to improve the line of safety as a result of the recent fatal head injuries of Jules Bianchi and Justin Wilson.
Head protection would then be likely to filter down into other open wheel racing series, but Miles does not believe the concept would work in IndyCar.
"We don't see that – the halo – having any possibility for us," Miles said. "We have banked tracks and you can't see out of the car with that. But we are very interested on developing driver head protection and continue to work hard. We are more likely to introduce a limited windscreen rather than that halo."
A windscreen system has also been proposed, with Daniel Ricciardo running it on his car for the free practice at Russia in 2016, but F1 teams have admitted that sufficient testing is needed on all devices before a decision is made.