Pictures from the scene showed plumes of black smoke billowed into the air and large flames emanated from the vehicle.
Police could also be seen keeping the public away as firefighters battled the blaze.
Firefighters used two hose reels to extinguish the flames after arriving at the scene at around 1.25pm.
"One casualty suffered smoke inhalation and was conveyed to hospital," a spokesman for Lancashire Fire and Rescue said.
"Crews were in attendance for approximately an hour."
Thanks for reading. If you value what we do and are able to support us, a digital subscription is just £1 for your first month. Try us today by clicking HERE.