Stéphane Thibodeau, City of Moncton's transportation co-ordinator, says driver error was to blame for the death of Aurore LeBlanc.

LeBlanc, 46, was struck and killed by a Codiac Transpo bus at a Moncton crosswalk on Jan. 20, 2012.

Codiac Transpo driver Gary Pellerin, 59, was charged with driving without due care and attention and was found not guilty.

family and estate are suing Pellerin and the City of Moncton for negligence. Stéphane Thibodeau, transportation co-ordinator for the City of Moncton, testified that it was his understanding the accident that claimed the life of Aurore LeBlanc was due to "driver error." (Jennifer Choi/CBC) LeBlanc'sPellerin

Thibodeau was called to the stand by the City of Moncton's lawyer, Talia Prophet.

When asked whether there should be "all red" or a "scrambled walk" at that intersection, where pedestrians can walk in all directions and all vehicles have red lights, Thibodeau said that works best in bigger cities with lots of pedestrian traffic.

He said the pedestrian count can be low as 19 per hour, up to 91 per hour. He said Toronto, for example, will only consider adding 'all red' pedestrian walk lights at an intersection with at least 2000 pedestrians/hr.

The 'all red' was a suggestion in a report written by Wayne Brown, a retired engineer who testified earlier on Friday about traffic patterns and accident reconstruction.

Thibodeau said no changes have been made to the intersection since the accident. Looking at collision statistics for that intersection between 2006 and 2011 showed one pedestrian accident with no fatalities, he testified.

Lawyer for the plaintiffs, Mike Murphy, cross-examined Thibodeau, asking repeatedly why changes were not warranted at that intersection under what he called these "extraordinary circumstances," referring to the death of Aurore LeBlanc.

Thibodeau replied, "this incident to our knowledge is complete driver error."

Driver has PTSD

Earlier in the day, bus driver Gary Pellerin told the court that he has suffered from PTSD since the accident, takes medication, and is seeing a psychologist and a psychiatrist.

He testified that on the day of the accident he was at a red light at King Street, waiting to turn left onto Main at 1:05 p.m.

I said how sorry I was. - Gary Pellerin , Codiac Transpo driver

He said three vehicles were ahead of him.

"I'm looking all around making sure there are no obstacles in my way," he told the court.

"I look to the left, in front, to the right, all the way around to make sure nothing funny happening.

"As I'm turning, I heard a thud on the driver's side of the bus, on the left hand side of the bus behind me.

"By now I'm in the crosswalk, wedged in the crosswalk … next I put my brakes on and get out of the bus. I go see a woman that was standing up on the road, then I looked in my rearview mirror, saw I had struck a pedestrian."

"I could see her boots under the bus."

Pellerin said LeBlanc's friend had scratches on her hands from falling down.

"I said how sorry I was."

He testified he didn't see LeBlanc, and her friend, prior to the accident.

In cross-examination, the plaintiff's lawyer, Mike Murphy, questioned Pellerin's mental health previous to the accident.

Retirned engineer Wayne Brown leaves a Moncton court after testifying in the civil case involving the death of a Moncton woman who was struck and killed by a city bus. (Jennifer Choi/CBC) Murphy pointed out that Pellerin took 96 sick days three years prior to accident and had taken the summer of 2011 off due to stress leave.

He also questioned the angle at which Pellerin turned to look and asked again if he saw LeBlanc.

Pellerin said, "Not at all."

'He would not be able to see'

After Pellerin's testimony, Wayne Brown took the stand.

Brown was the chief architectural designer at CFB Gagetown from 1984 to 2014. He designed roads, analyzed stopping distances and street signage on the base.

Brown testified he conducted his own investigation, voluntarily, as part of his research for a doctorate degree.

He said he spent 1,000 hours investigating this accident.

Murphy took issue with the fact that Brown had never taken formal traffic reconstruction courses.

Brown testified that he made 200 visits to the intersection where the accident happened, did traffic counts, and looked at historical Environment Canada data to determine placement of the sun.

Based on his investigation, Brown said, "He [Pellerin] would not be able to see anybody in the crosswalk."

He told the court there was a shadow in the intersection from the sun. He said it takes at least half a second for eyes to adjust to light intensities, so shadow and light impeded Pellerin's ability to see at the time of the accident.

The trial ended late on Friday afternoon. The judge is expected to receive submissions from lawyers and then render his decision.