Paramedics were called at 2.34pm after a car collided with parked vehicles on Western Road.
A spokesman for the East of England Ambulance Service said: “We sent one ambulance crew and treated two patients at the scene – a mother and young baby.
“They were checked over at the scene but they were not injured and luckily were all okay.”
Herts Police were called at 2.34pm and closed the road while the vehicle was recovered.
The log was closed at 3.54pm and it is believed the road is now clear.