Unnecessary idling poses a risk to people in the vicinity and to the environment. Engine emissions are increasingly connected to a wide variety of health complaints. Automobile exhaust leads to tropospheric ozone formation and other forms of air pollution. It also releases greenhouse gases to the atmosphere, a major contributor to global climate change. No-idling is a simple and cost-effective way to reduce emissions and protect health.
Vehicles idling get zero miles per gallon. Unnecessary idling wastes fuel and pollutes. Running an engine at a low speed also causes more wear and tear on the vehicle. Studies have shown that the break-even point of turning an engine off and restarting it as compared to leaving it on to idle is 30 seconds.