An ALMS Porsche catches air on the bump that proved so problematic for IndyCars. (LAT photo)
Grinding of the affected section of pavement on the Pratt Street main straightaway didn't provide the results expected to alleviate a bump near the light rail tracks that upset the IZOD IndyCar Series cars' stability during the morning practice session for the Grand Prix of Baltimore presented by SRT. So, the back-up plan of erecting a tire barrier to simulate a chicane was put in place for the delayed afternoon session on the 2.04-mile, 12-turn street circuit under the direction of Tony Cotman, president of NZR Consulting, whose company has overseen the track construction. A 30-minute session concluded the day for the IndyCars.
Championship leader Will Power set the pace in the brief second session at 1:21.4572 with his Verizon Penske Dallara. Simon Pagenaud was second quick at 1:21.4883 in the No. 77 Schmidt Hamilton HP Motorsports car.
Scott Dixon (Target Chip Ganassi Racing), was third at 1:21.7211, with KV Racing's Rubens Barrichello (1:21.9194) and Andretti Autosport's James Hinchcliffe rounding out the top five.