There is no danger with transporting small volume LPG cylinders that are appropriately restrained and correctly filled. However, like all other fuels, LPG should be treated with care.
Liquefied petroleum gas also referred to as simply propane or butane. It is a flammable gas that can be used as fuel. It can be used in heating appliances, vehicles and various production areas. When it is used as a vehicle fuel it is referred to as autogas.