COLUMBIA, S.C. — On Thursday, Cecil Morgan and David Sibbick were fixing a pothole in Horry County when they were struck and killed on the job site, according to the South Carolina Department of Transportation.

The South Carolina Highway Patrol is investigating the incident. 

"These two young men were dedicated employees and put their lives on the line daily to serve the motoring public, as do all of our employees who work on our highways," said Secretary of Transportation Christy Hall in the SCDOT press release. 

"SCDOT has active work zones all over the State. This tragic incident should serve as a reminder to the traveling public to obey signs in work zones, slow down, and watch for workers. Drivers should pay attention, avoid distractions, and expected the unexpected. These measures are not only for the safety of our workers, but for your safety as well," her written statement continued.

Now, the father of David Sibbick is speaking out, asking drivers to be more careful and for changes to South Carolina's laws and work zones.

When reached over the phone, Scott Sibbick said his son was an avid and talented guitar player. He described his son's collection of more than a dozen guitars, including an autographed Les Paul.

"He was probably the most caring, giving, would do anything for you-- always had a smile," Sibbick said about his son.

"He was just always happy, just always loved life, loved what he was doing, he loved music," Sibbick said, continuing that David enjoyed a shooting hobby and following politics.

The father said he lost his best friend and only son in the accident and that it should serve as an impetus to change laws in the state.

"The penalty for disobeying, you always see move over let them live, they're talking all about that. But they don't really put like a penalty against it. They don't really say 'well it'll be what is it 50 dollar fine or whatever the fine would be.' They don't really emphasize the moving over, which is, to me, common sense. If they put a 5,000 dollar price tag against it, maybe something then-- that would make people follow the law," Sibbick said.

Currently, a driver who causes great bodily injury or death to a worker faces a fine up to $5,000 and years in prison.

The fine for a driver whom does not cause bodily harm, but endangers a highway worker is $1,000 to $500. The person could also face 30 days in jail, according to state law.

You can read the current laws here.

Along with harsher penalties, Sibbick said SCDOT should do more to protect workers with so-called 'crash vehicles.' Sibbick claimed the vehicles are used to protect work sites in states like Connecticut, where he's from originally.

Sibbick told WLTX neither his son nor Morgan were in the roadway when the accident occurred.

He continued that he did not want what happened to his son to happen to anyone else.

SCDOT said 85 people have died in the line of duty for the agency, including Morgan and Sibbick.