One mile travelled by one passenger, as a unit of traffic.
- The fuel efficiency per passenger mile travelled by train is no better than that of an average diesel car carrying two people.
- To compare risks for a journey of a fixed distance, we should measure deaths per passenger mile.
- In one passenger mile, rail generates .01 grams of hydrocarbons, a bus .20 and a car 2.09.
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Line breaks: pas¦sen|ger mile
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