Provincial police say it was a disaster waiting to happen.
OPP say a concerned motorist reported the operator of a propane truck appeared to be driving erratically on Highway 402 west of London on Monday morning.
They say officers located and pulled over a truck towing a dual trailer containing 63,500 kilograms of propane on the highway in Warwick, Ont.
The driver -- who allegedly had open liquor in the truck -- was arrested for impaired driving and OPP say his breath sample indicated nearly three times the legal limit.
A 38-year-old Woodstock man is to appear in court in Sarnia, Ont., on May 7.
The OPP also thanked the motorist who reported the incident.
"You may have saved the citizens of Ontario a major catastrophe. Thank you!" police said in a release.
