If every American walked, or biked, to work just one day a week we would save about 500 million gallons of gasoline every year. Over 22% of all motor vehicle trips Americans take are less than one mile long, and 50% of the working population commutes five miles or less to work.
Walking to work one day a week is a great step to take. You will be reducing your carbon footprint, consuming less fossil fuels, reducing the amount of greenhouse gas emissions, reducing the amount of traffic, and getting exercise. The exact amount of emissions you will be reducing depends on what kind of vehicle you drive and how long your commute is. Say you have a 30 mile round trip commute to work and your vehicle gets 15 mpg. You would be using about 2 gallons of gasoline per trip to work and back home, one gallon of gasoline produces about 19.4 pounds of CO2. So by walking you are preventing 38.8 pounds of CO2 emissions.
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