Just 12 minutes after the 10:03 start time, Sarah Fisher Hartman Racing's Josef Newgarden caused the first stoppage of the day when his No. 67 DW12 went off-roading in Turn 4.
5 minutes after Newgarden's red flag, the track went green, only for another red to fall at 10:29 due to a power outage in Race Control. The situation was handled and the track went green two minutes later and continued that way to end the 45-minute session at 10:48.
Sebastien Bourdais topped the Practice 1 time charts with fastest lap of 1:10.5150 followed by Ryan Hunter-Reay(1:10.9053), Simon Pagenaud(1:11.0045), Josef Newgarden(1:11.0188) and Scott Dixon(1:11.0454).
Indycar's second and final session of the day was much cleaner than the first. With ambient temps rising 14 degrees and track temps jumping 43 degrees.
The green flag dropped as scheduled at 2pm and stayed that way through the 2:45 checkered.
The practice, however, was not completely without incident. Dale Coyne Racing's Carlos Huertas was penalized with a drive-through penalty for a pit speed violation just 9-minutes into the session.
INDYCAR also ended Jack Hawksworth's session 3-minutes early and Josef Newgarden's 6-minutes for tardiness to the mandatory weigh-in following the morning session.
The IndyCar's return to the 14-turn, 2.439 mile road course for practice 10am Friday.