The trial has begun for a Chateauguay woman who parked her car on Highway 30, causing a crash that led to the deaths of two motorcyclists.

Emma Czornobaj, 25, came to a halt in the left-hand lane of Highway 30 on June 27, 2010 around 7 p.m. to help some ducks cross the road.

Andre Roy, 50, was riding his motorcycle with his 16-year-old daughter Jessie as a passenger and was followed by Roy's wife Pauline Volikakis.

The motorcycle smashed into the rear of Czornobaj's parked car. Roy died at the scene and his daughter Jessie was trapped under the car and later died in hospital. Volikakis was also injured.

Czornobaj is charged with criminal negligence and dangerous driving causing death. She faces life in prison if convicted.

Before the trial began the judge gave the jury standard instructions not to read any media reports about the case and said that Czornobaj is not required to testify.

In opening arguments, the Crown asked the jury to consider if a reasonable person would have stopped their car in a traffic lane on a highway in order to get out and let ducks cross the road.

Volikakis and other witnesses to the crash will testify, as will a collision reconstruction expert.

The trial is expected to wrap up in three weeks.