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green transport hierarchy

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  • Simon Norton
    A few comments on Chris Bradshaw s paper. 1. Use of public transport does have one important positive factor which should be factored in: it helps to keep the
    Message 1 of 1 , May 30, 2006
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      A few comments on Chris Bradshaw's paper.

      1. Use of public transport does have one important positive factor which should
      be factored in: it helps to keep the system going by reducing both cost and
      energy efficiency on a per passenger basis.

      2. In classifying modes of transport by energy source one must factor in their
      substitutibility. For example using hydrogen generated from renewable sources is
      not an advantage over fossil fuels if those renewable sources could otherwise be
      used to generate electricity that would otherwise need fossil fuels to generate.
      (And if the hydrogen is generated from fossil fuels it is no advantage at all
      except for local air quality.)

      3. Small vehicles are only an advantage over large ones if the number of
      passengers is kept constant.

      4. For trip purposes, multi-purpose trips will usually score higher than single
      purpose trips.

      5. Why "don't ban street parking/stopping" at peak (or other) times ? Last week
      I did a bus trip in inner (but not central) London which took nearly an hour for
      about 4 miles -- because there were two diversions due to major road closures
      and in both cases the bus couldn't get through on its diversion route due to
      parked cars.

      Simon Norton
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