Investigators say the driver of the school bus that collided with a truck at a New Jersey intersection reported he pulled ahead of the roadway stop line to get a clear view -- and never saw the truck coming.

The National Transportation Safety Board said Friday that 66-year-old John Tieman had been a school bus driver for just three weeks when the accident occurred Feb. 16 in Chesterfield. And the NTSB said it found the truck, hauling asphalt, was 5 percent overweight.

But investigator Peter Kotowski says no conclusions have been reached.

Triplet Isabelle Tezsla, a state trooper's daughter, was killed in the crash. Two other 11-year-old students, including one of her sisters, remain in critical condition.

Kotowski says local officials are proactively making safety improvements at the intersection, including adding warning signs.

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