Last year, 22 percent of commercial vehicles had serious violations according to the Roadcheck program, a national, annual program that inspects 18-wheelers and even pick-ups that haul heavy equipment for work-related trips.

Troopers at the weigh station in Ozona are looking for any kind of violation.

But this time, they're not behind the vehicles...they're under them.

It’s part of a national program called Roadcheck. All day for three days straight, troopers who are certified check lights, hoses, brakes, tires and loading standards.

The truckers drive on the scales, where their trailers are weighed and tested. The troopers also check logbooks to make sure no driver is fatigued, aggressive or impaired. These tests can take anywhere from a few minutes to around an hour.

"Right now, I lost a load already, but they're doing their job like I'm doing my job so I understand,” Dagoberto Noyola said.

The ultimate goal is safety. That means keeping unsafe vehicles and...

"It's good too at the same time when they pull you over because they could see something you can't see that could cause an accident, and it could save someone's life, you know, and even my life. So, I don't mind getting pulled over every once in a while,” Noyola said.

To this owner-operator, it's worth the temporary loss of business to keep himself and others safe. But he says he tries to keep his truck in the best shape year-round.

"It's hard to keep those trucks in shape, but the better you keep them, the better you keep those DOT's away from you,” Noyola said.

He only had a few violations on his trailer.

"Brakes out of adjustment on unit two, that's gonna be axle four left, brakes out of adjustment axle five left."

Meaning he can't use it until he fixes it. But earned the prized decal coveted by all big rig drivers for his truck.

"Now on your tractor, you don't have any violations so you've earned a CVSA decal."

This program may only last a few days, but it's another great time to remind all drivers of the slowdown, move over law. If you see a first responder or tow truck driver pulled over on the side of the road, move over to the furthest lane or slow down to 20 miles an hour below the speed limit.