A 63 year old woman was cut free from a car that overturned on Mont Felard.
Fire crews were diverted from a joint training exercise with the Coastguard and RNLI on Thursday afternoon.
They released the trapped motorist, who was treated at the scene by paramedics. She was uninjured.
Earlier that day, firefighters had been called to a car on its roof at the accident blackspot on Rue du Pont Marquet in St Brelade.
A heavily pregnant 24 year old woman had made it out of the vehicle.
She was taken to A&E to be checked over.
Police are appealing for witnesses to a separate collision that put a teenage moped rider in hospital with a serious leg injury.
It happened at around 7.40am on Thursday.
The 16 year old collided with a white van, being driven by a 53 year old man, opposite West Park apartments.
Search sparked for paddle boarder off Jersey's south coast
Four seals found in Jersey have been returned to the sea
Car parking charges in Jersey to rise by 7%
Person rescued from a blaze at a flat in Jersey
GP launches group for pro-assisted dying healthcare workers
Four Jersey seal pups to set sail and return to their seas
Photographer teams up with Jersey charities to rejuvenate town
Jersey's inflation rate falls to 5.7%
