Boyd said Gwinnett currently changes out the turbo chargers on the $350,000 buses every 175,000 miles, which he said is below manufacturer's recommendations. The turbo charger in the March fire had 67,000 miles on it; Thursday's had only 37,000.
"We're talking to our contractor about reducing the change-out period," Boyd said.
Boyd commended the bus driver Thursday for getting the bus to the side of the road and engaging the fire suppression ring as trained.
"Safety is the number one thing we stress with maintenance and with our drivers," Boyd said. "They're trained on what to do. We thing we're doing all the things that need to be done."