A baby was delivered Tuesday on a roadside in Howard County in what was at least the third birth this month that occurred before the expectant mother could reach a hospital.

In Tuesday’s incident,a 38-year-old woman gave birth to a baby boy at 9:05 a.m. alongside Route 100, the Howard County police said.

As she was en route to the Anne Arundel County Medical Center, signs appeared that birth was imminent, and the child’s father called a 911 dispatcher from a site just west of Interstate 95, police said.

Dispatcher Meghan Blizard helped the man remain calm, while providing instructions for delivery, the police said.

Rescue personnel arrived shortly afterward, cut the umbilical cord and took the family to the medical center.

The incident came only a few days after a baby girl was delivered on Interstate 270 in Montgomery County.

Assistant county fire chief Scott Graham said rescue personnel arrived soon afterward and took the girl and her parents to a hospital. First indications, he said, were that they were all doing well.

On Aug. 1, a 23-year-old District woman gave birth to a boy about 10:30 a.m. on the platform of the L’Enfant Plaza Metro station.

The frequency of such deliveries could not be learned immediately.

However, the dipatcher in Tuesday’s Howard County incident said “It’s not something that happens every day.”