WESLACO – Tractor-trailers drive through Rio Grande Valley streets and U.S. Border Patrol checkpoints every day.

Ten people died after a trailer was found filled with more than 30 people who crossed the border illegally in San Antonio.

A federal criminal complaint stated the driver, Mathew Bradley Jr., could have come to Brownsville and knew about the illegal immigrants inside the tractor trailer.

An employee of a Valley transportation company said Bradley’s decisions give truck drivers a bad reputation.

"I wish that truckers wouldn't even get into that. But I mean some guys think they want to make a quick dollar," said C-Fann truck driver Guadalupe Saldivar.

Saldivar said before this truck is loaded with its cargo, it must go through an inspection.

"I check my lights, check out all the damages it's got and report it in. That's how come I stop right here and check the inside and make sure it's clean," he said.

Saldivar, his wife and their puppy are on the road. He said they’ve been driving coast to coast and border to border since 2005.

C- Fann Transportation co-owner Chris Fann wants to make sure his drivers are obeying the law. He said they need to use locks, cables and labels to secure and track their truck loads.

Fann also installed motion sensors inside the trailers and doors.

"That will alert us to the doors being opened or closed when they’re not supposed to be. They will send us text messages. We have load sensors that will tell us through the trailer if anything has changed from the time is loaded to unloaded," he said.

Fann said each trailer is also equipped with GPS tracking devices.

“The second that truck deviates from that lane, we will get text messages and we will be inquire as to what's going on," said Fann.

Saldivar has a message for other drivers.

“Drivers if you need money, get another job if it's not enough for you. Don't put your life in harm’s way or anybody else’s,” he said.

Saldivar said the decisions made can change a driver’s life forever.

The case in San Antonio is being investigated by U.S. Immigration and Customs Enforcement. The driver faces the possibility of the death penalty.