UPDATE 3.45PM: Investigations into a serious truck and car collision in Meringandan this morning are continuing as a woman driver remains in hospital.
The 53-year-old female driver of a Mazda 6 sedan remains in Toowoomba Hospital in a stable condition after she was cut free from a car involved in the crash about 10.30am on Meringandan Shirley Rd.
Firefighters cut the woman from the wreck and paramedics transported her to hospital in a serious condition with chest and spinal injuries.
Country Patrol Group Inspector Sharee Cumming said investigations into the crash were continuing.
"The crash is still under investigation," Insp. Cumming said.
"The sedan has veered onto the wrong side of the road into the path of the oncoming truck.
"The cause of the vehicle veering onto the wrong side of the road is still subject to investigation."
Several witness statements were taken from nearby residents and passing motorists at the scene.
Queensland Fire and Emergency Services Inspector Peter Bradow said multiple fire units were deployed to the crash scene with initial reports the truck was on fire which spread to a nearby paddock.
It took firefighters about 30 minutes to bring the grassfire under control.
"The fire itself, from (QFES) perspective, was probably caused by heat on the exhaust," Insp. Bradow said.
"All crews attending did a very good job with a couple of priorities in that they had an extraction from the vehicle as well.
"Once a truck is on fire, you've got a large volume of fuel in the tanks and once the fire gets established, it normally melts the aluminium and contributes to the fire."
The Forensic Crash Unit investigation is continuing.
UPDATE 12PM: A woman has been taken to hospital with suspected spinal injuries after a shocking collision between a car and truck at Meringandan.
Damage to the dump truck carting heavy rock is believed to have sparked a large fast-moving grassfire on one side of Meringandan Shirley Rd.
It took firefighters 30 minutes to bring the fire under control.
Meanwhile just metres away on the opposite side of the road, firefighters and paramedics worked to free a woman, believed to be in her late 40s or early 50s, from a badly damaged sedan.
Queensland Fire and Emergency Services Inspector Peter Bradow said firefighters were forced to cut away part of the car to free the woman pinned inside by a collapsed dashboard and steering wheel.
"She has suspected spinal injuries and will be transported to Darling Downs Health Services," he said.
"She was entrapped by the dash and steering wheel."
Multiple fire crews were deployed to battle the grass fire which engulfed and surrounded the truck.
The truck driver escaped uninjured.
'The truck fire at this stage is under investigation and we believe it was a result of the impact," Insp. Bradow said.
He commended the actions of neighbours who were first on the scene and spoke with the woman trapped in the sedan.
"The neighbours around the place certainly provided some emotional support until (emergency services) arrived," he said.
Investigations into the cause of the crash are continuing.
UPDATE 11:20AM: Firefighters are extinguishing a truck fire as paramedics work to free a motorist from a vehicle after a crash in Meringandan.
The Meringandan Shirley Road is closed to all traffic as the two incidents are investigated.
A large grass fire broke out on one side of the road where a dump truck appears to have crashed into a drain.
Multiple firefighters remain on scene hosing down the truck and surrounding area.
Opposite the burning truck paramedics are assessing a motorist in a sedan.
EARLIER: A truck is on fire after a collision with a car north-west of Toowoomba, according to reports.
Emergency services are rushing to the scene reported as being on Meringandan Shirley Rd near Meringandan.
The incident was reported as a collision between a car and a truck after which the truck caught fire.
The crash was reported at 10.30am.