Ahmed Shaaban knew law enforcement was in pursuit of the murder suspect Tuesday evening when he positioned the big rig in front of the suspect's car at an intersection in Pomona.
When Shaaban spotted the driver at a red light, he decided to end it right there.
The suspect ended up slamming into the big rig, bringing an end to a dangerous and erratic chase across multiple Southern California counties.
MORE: Passenger in murder suspect's vehicle describes wild pursuit that ended in big rig crash in Pomona
"My truck was already out there, and if he passed, I would have blocked all the cops and he would have gone," Shaaban said. "I had to end it before he killed someone, or hit a car or hit a kid."
The big rig's dash cam captured video of the moment the vehicles crashed.
The suspect was taken into custody and his passenger was questioned by authorities and later released.
Shaaban says the vehicle, which he uses to make his living, is probably totaled. He's afraid insurance won't cover it, since technically, he crashed it on purpose.
But he says he would do it again, and he does have a GoFundMe, which he hopes will help out.