Natural gas tens of millions of structures that use the fuel, the individual risk of using natural gas is very low. Natural gas heating systems may cause carbon monoxide poisoning if unvented or poorly vented. In 2011, natural gas furnaces, space heaters, water heaters and stoves were blamed for 11 carbon monoxide deaths in the US. Another 22 deaths were attributed to appliances running on liquified petroleum gas, and 17 deaths on gas of unspecified type. Improvements in natural gas furnace designs have greatly reduced CO poisoning concerns. Detectors are also available that warn of carbon monoxide and/or explosive gas (methane, propane,
Natural gas vehicle what really took off due to its inherently far lower capital costs. Compressed Natural Gas is a domestic energy produced in Western parts of India. In India, most CNG vehicles are dual fueled, which means they can run both on CNG and gasoline. This makes it very convenient and users can drive long distances without worrying about availability of natural gas (as long as gasoline is available). As of December 2010 India had 1,080,000 NGVs and 560 fueling stations, many of the older ones being LPG rather than CNG. In addition, it is thought that more illegally converted LPG autos