Greally said the numbers were disappointing.
"We'd be delighted not to have to issue any notices at all, as it would show everyone was driving safely and responsibly, and deaths and injuries on our roads would fall.
"Unfortunately it shows that some people still aren't taking seriously the real risks associated with making these potentially life-altering choices behind the wheel."
He said from January to July this year, 50 people were killed in crashes where they weren't wearing a seatbelt.
"That's a shocking statistic but this isn't about numbers, it's about people.
"This includes the grieving families and friends left behind," Greally said.
"It takes two seconds to put on a seatbelt and that simple act can save your life."
Similarly, other good driving habits like putting mobile phones away where they cannot distract drivers' focus from the road are really simple to get into.
"We want our roads to be a safe place for everyone, but we all need to work together to make it happen."