Natural gas is the safest fuel available today. In study after study, natural gas has been proven to be as safe or safer than gasoline. Natural gas dissipates quickly. Since it is lighter than air, it cannot spill. Vapors from propane and liquid fuels are heavier than air and will tend to pool near the ground, creating potential safety hazards.
Natural gas is less combustible.
Consequently, there is no health risk from exposure to your lungs and skin. It cannot contaminate soil or water, so users are not subject to underground storage tank and hazardous waste regulations. Delivery to fueling sites is via underground pipeline, eliminating the hazard of tanker trucks and the potential for fuel spills. Code 52 and other federal, state and local regulations. A vehicle that runs on natural gas only is called a dedicated vehicle.