A Baltimore man who built his own brand of bicycles was killed yesterday in Carroll County while riding one of them, Maryland State Police said.

Thomas Bruni, 54, who operated Bruni Bicycles in Baltimore, ran a stop sign at an intersection near Westminster and crashed his bicycle into the side of a van, said state police Trooper Kenneth Cain.

At 2:54 p.m., Bruni was riding south on Halter Road, approaching Stone Road, Cain said. A Pontiac minivan was going through the intersection on Stone Road as Bruni approached, he said.

Cain said Bruni failed to stop and ran into the side of the van. His speed was not known, but Cain said some of the van's windows were shattered.

Five of the six occupants, ranging in age from 3 to 80 years old, were taken to a hospital for treatment of scratches and abrasions, Cain said.

Cain said Bruni had been touring the area with his wife and a friend. He said the others were not close enough to see the crash.

Bruni designed, built and sold custom bicycles. His Web site said his products included tandems, sport-touring models and suspension tandems. Articles linked to his site called him a former ship welder whose "suspension bicycles" rode unusually smoothly, making bad pavement and even train tracks "almost cease to exist."