Drivers of LPG-powered vehicles are resorting to the risky, and illegal, use of household gas as a way to beat higher prices after subsidies for LPG were removed on Tuesday.

They can fill up using a special device that has until recently been used secretly and illegally, but has now become popular.

The numbers resorting to this practice may be in the hundreds of thousands across the country.

It's expected to become even more widespread now the price of a kilogram of LPG will rise much higher following the removal of government subsidies on the automotive gas.

LPG used for vehicles and for cooking is physically identical here in Thailand. State price support remains in place for cooking gas only.