A dual carriageway was forced to shut down after a car fire spread around Heathland.
Eight fireworks were sent to A338 near Bornmouth Airport, firstly raised at around 13:30 BST after the alarm, Dorset and Wiltshire Fire Service said.
The firefighters said that the wind took a spark across the road from the south to the south, causing two more fire in Heathland to the north.
Seva said Blaze was extinguished at 17:15. Carizway remained closed for a time on the north, while the power lines were checked.
The vehicle fire, a south -east slip going to a mine in the road, initially closed both carriageways and sent black smoke across the road.
The fire crew of SpringBourne, Wareham, Christchurch, Pole, Redhill Park and Ferndown participated in the blaze, supported by the crew of Limington and New Milton in Hampshire, Seva said.
A338 is a major road used by Holidackers between Ringwood and A31 near Bornmouth.
The Dorset has caught fire of two major heaths in this month, which includes a single one. Newton Heath Near Swanj, who was burnt for 10 days, while firefighters from all over England helped deal with an explosion Holt Heath 72 hectares (177 acres) near Wimbourne beyond the land.
