Planes, Trains Automobiles
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The Rochelle Area Community Foundation (RACF) is thrilled to announce a new and unique event called Planes, Trains & Automobiles- A Century In Motion. This event hosts a multi-million dollar car collection that will race on the Rochelle Municipal Airport runway. The event features some spectacular machines, including planes, trains, and automobiles. These aren't just average pieces of machinery. These are rare, vintage, or worth tens of millions of dollars.
Second, one needs to measure fuel efficiency on a common metric. The fuel economy of a car is often quantified in terms of miles per gallon, which is a poor metric for intermodal comparisons given the large difference in vehicle size across modes. A better metric is to compare vehicles on the metric of passenger miles per gallon, which is obtained by multiplying mpg by the number of passenger carried. Some previous comparisons have assumed an occupancy of one for cars, which may be appropriate for a commute but not for longer trips. According to data collected by the Oak Ridge National Laboratory, the average occupancy for passenger vehicles on longer leisure trips, which are most comparable to trips taken on planes, buses, and trains, is typically in the range of 2.2.
Third, one needs to correct for the fact that vehicles use different types of fuels, with buses, planes, and trains typically operated on denser, more carbon-intensive fuels than passenger vehicles. For example, one gallon of jet fuel contains about 127,000 BTUs, or about 11% more energy delivered than gasoline. A fairer comparison can be made by by normalizing each fuel to gallons of gasoline equivalents based upon energy content. Otherwise, a passenger-mile per gallon metric without energy conversions would favor planes and buses over cars.
As Figure 1 demonstrates, we estimate that planes are currently the most fuel-intensive transport option at about 43 passenger miles per gallon jet fuel, or a little over 40 passenger miles per gallon gasoline equivalent (MPGge). The most energy efficient option is actually an interurban bus, at an estimated 152 passenger MPGge. Interurban rail and cars have intermediate values of 51 and 53 MPGge, respectively. One can make a similar comparison across modes for the future by correcting for mid-term technological improvements. Figure 2 summarizes the results of the same intermodal comparison based upon the average fuel efficiency of a hybrid car sold today, improved interurban buses such as those being produced for Greyhound, the anticipated California high-speed rail (CA HSR) project, and the A320-NEO currently under development by Airbus. As the figure demonstrates, the fuel efficiency of each mode improves without changing the relative ranking, although advanced trains and cars appear to be improving more rapidly than planes and buses. 781b155fdc
Cars are such a convenient choice for travel, especially compared to planes and trains. It’s always good to know about reliable towing truck companies too, in case your car needs help on the road. Having that backup plan makes trips stress-free!
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