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Small Cars Save Big at 55 MPH
At speeds over 70 MPH a small vehicle will use nearly as much energy as larger ones, negating the benefits of its smaller size and weight!
The amount of energy saved as a result of drivers observing ALL speed limits and never exceeding 55 MPH will increase over time as the vehicle fleet of large units is replaced by smaller "downsized" models. While slowing down reduces energy consumption for all vehicles, smaller vehicles fuel economy suffers more at high speeds than larger vehicles do. In fact, as the following chart shows, at speeds over 70 MPH a small vehicle will use nearly as much energy as larger ones, negating the benefits of its smaller size and weight!
This is not to excuse the illogical practice of overpowering vehicles that are too big and heavy, these waste more at any speed. Rather, this demonstrates again why everyone needs to slow down to observe ALL speed limits and never exceed 55 MPH to save 20% - 50% right now with NO new technology, especially small vehicles!
This is not to excuse the illogical practice of overpowering vehicles that are too big and heavy, these waste more at any speed. Rather, this demonstrates again why everyone needs to slow down to observe ALL speed limits and never exceed 55 MPH to save 20% - 50% right now with NO new technology, especially small vehicles!
For more information:
http://drive55.org
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