Montreal: Bruno Senna admitted his crash during Fridays' second free practice session for the Canadian Grand Prix was caused by frustration with traffic at the Circuit Gilles Villeneuve.

The Williams driver hit the 'Wall of Champions' about an hour into the session after he lost control of his car at the final chicane.

The incident produced a red flag and the session was brought to a stop for at least ten minutes.

The 28-year-old admitted he had been caught trying to overcompensate after being held up by other drivers.

"It was a big shunt," he said. "I was a bit frustrated, I got too much traffic on my laps - never got a clear lap - and then I pushed a bit too hard in the chicane."

"This is the wall of champions for a reason; everybody seems to have an issue with that wall. Unfortunately it's a big shunt so there's a lot of damage to the car, but these guys are great; they're going to get it sort it and we're going to be back on track tomorrow."

Senna was testing a new rear wing before his accident, which team-mate Venezuelan Pastor Maldonado had tested in the morning session. The new curved wing was destroyed but Senna was confident his team could repair the car and confirmed they had a spare.

"There's plenty of damage - it's the front end of the car and the rear of the car.

"It was a very unfortunate crash where you crash with the rear first and then with the front but they have plenty of spares and we're going to be back in shape tomorrow."

Senna completed 22 laps in the afternoon session and ranked 17th just under a second behind team-mate Maldonado who finished 13th fastest.

(Agencies)

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