[4] All cars run a Dallara safety tub utilizing the IndyCar mandated Universal Aero Kit 18.

Racer.com's Robin Miller reported on July 15 that after speaking with IndyCar officials that the qualifying procedure for Iowa would be modified.

The aeroscreen had its first major test when during an aborted restart on lap 157, Ed Carpenter Racing's Rinus VeeKay appeared to slow behind eventual race winner Simon Pagenaud and move to the right, and behind the Dutch rookie, Andretti Harding Steinbrenner Racing's Colton Herta was caught in an accordion affect, launching the No.

Prior to getting significantly airborne, Herta's unimpeded nose – minus its wings – attempted to spear into the left side of VeeKay's cockpit, level with his helmet.

With the aeroscreen acting as a vertical barrier, Herta's nose was forced upward, sliding skyward on the screen before hitting the top of the aeroscreen frame and flying over VeeKay's Dallara DW12 chassis.