Fatigue behind deadly truck crashes?

How safe do you feel speeding down an interstate next to those big 18-wheelers?

Truck drivers are often among the most experienced drivers, but those long hours on the road can lead to trouble.

Just this week, an erratic, wrong-way truck driver caused a fiery crash on I-75. Dash cam video of that out of control tractor trailer along Interstate 75 in Turner County leads to a lot of questions and few answers. The driver, 63-year old Robert Harrison, died in a fiery crash. What caused that crash remains a mystery.

"I started down here in Ocala, Florida and I drove up to here," says Dale Harville, a truck driver for a transport company out of Greenville, Tennessee. While his log book indicates how much time he spends behind the wheel of his rig, he admits the schedule can often be grueling and tiresome.

"It's the shippers you know. They won't set you up for four hours. If they would get on the ball and get out there like they're supposed to, it would make it a lot easier on the drivers," he says.