The mother of a young motorcyclist who died after a collision with a Police truck made an emotional visit to the scene yesterday.

Beverly Kozma, 56, attended the junction of Dundonald Street and Cedar Avenue as part of an inquest into the death of 21-year-old Michael Scott (Sprockett) Kozma.

Coroner Juan Wolffe had opted for a site visit on the third day of the proceedings, to see for himself the layout of the road and the traffic lights in question.

Witnesses have claimed that Mr. Kozma was speeding at the time of the accident around 10 p.m. on April 29 2005.

However, Kozma family lawyer Edward Bailey has taken issue with that.

He has called the speed and positioning of the Police truck into question during the course of the inquest, which opened in August.

Yesterday, the Coroner rode in the Police Toyota Landcruiser involved in the collision.

He also watched as accident scene investigator Constable Stephen Paynter rode his motorcycle through the traffic lights at 72 kph.

P.c Paynter has estimated that to be the speed Mr. Kozma was doing when, he believes, he shot a red light and hit the truck.

The investigator said he calculated the figure based on evidence from witness Timothy Boyles, 43, from Warwick.

Mr. Boyles earlier told the inquest that he was driving his BMW station wagon east along Dundonald Street towards Cedar Avenue prior to the crash.

He described seeing Mr. Kozma's bike overtake him at high speed, becoming airborne as he went over the speed bump / pedestrian crossing outside Mount St. Agnes school.

Mr. Boyles said the lights were on green when the motorcycle passed his car, but red by the time Mr. Kozma went through them "at high speed".

The bike hit the truck, which was coming from Cedar Avenue and heading towards Victoria Street. Mr. Kozma died in hospital from multiple injuries around two hours later.

P.c Paynter said he made the 72 KPH calculation based on how long it takes the lights to go through amber to red, compared to the distance the bike covered in that time according to Mr. Boyles.

He did not list any conclusions about the Landcruiser's speed, and Mr. Wolffe asked him: "Just as you determined the speed of Mr. Kozma's cycle, do you think it would be equally useful to determine the speed of the Police vehicle?"

P.c Paynter replied: "Yes, but the evidence was less than I had for Mr. Kozma."

He explained that the absence of skid marks on the road made it hard to reach a conclusion about the speed of the Landcruiser.

Mr. Bailey also cross-examined him on the topic, suggesting that Mr. Kozma may have been travelling at a slower speed.

However, from the damage to the Police vehicle, P.c Paynter said, "this is not 35 kph or 50 kph damage" done by the motorcycle.

And, he said, the truck "could not have been travelling at a very high rate of speed" because the driver, P.c Andy Beaupierre, would not have been able to halt within eight or nine metres of the collision otherwise.

During the site visit, family and friends of Mr. Kozma made it clear that they doubted the conclusions reached by P.c Paynter about the speed and positioning of the vehicles.

Therefore, the much-delayed inquest was subsequently postponed again to November 6, because Mr. Bailey wants to consult a US-based collision investigator.

The aim of the coroner's inquest is to establish the cause and circumstances of Mr. Kozma's death, rather than to attribute blame.

Mr. Wolffe made it clear yesterday that he wishes the next hearing to be the last, so he can consider his ruling as soon as possible.