<a href="mailto: pzekman@cbs.com; mhlebeau@cbs.com; dlblom@cbs.com" target="_blank">Send Your Tips To Pam Zekman</a>By Pam Zekman

CHICAGO (CBS) — Traffic on the Dan Ryan Expressway ground to a halt for hours following a multi-vehicle accident.

The truck driver at the heart of the mess told 2 Investigator Pam Zekman he did everything he could to prevent the accident.

The truck driver, Kenneth Dunn, says he swerved to avoid being hit by a car that came into the far right lane he was in on the Dan Ryan Expressway near 95th Street Tuesday afternoon.

According to State Police he hit a concrete wall and the freightliner separated. The trailer hit a bus filled with 37 special needs adults, and then the bus collided with another truck.

Kenneth Dunn, was ticketed for failure to reduce speed to avoid a crash, unsafe equipment and spilling a load of paper across the highway.

In the last 24 years Dunn has received 15 tickets. Eight resulted in fines totaling $1,297 for violations like disregarding stop signs and following too closely.

Dunn is the founder and President of The Resource Center a not-for-profit organization with five trucks that haul paper, metal, glass and other discarded materials to recycling plants. And he’s a founder of the City Farm in Englewood and other area gardens.

Dunn says yesterday’s accident was his first after more than 40 years driving a truck.

“This was a terrible event and no one could be more upset than me that it happened,” he said.

Dunn declined to do an on camera interview saying he feared it would not benefit recycling or his various environmental projects which have been highly praised.

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