Frequency & Simplicity vs Coverage

Again, solving these issues may involve a trade-off between different objectives and goals. In particular, given finite resources, there is trade-off between –

  • providing lots of closely spaced routes which penetrate housing areas, giving good geographical coverage but at lower frequencies (the “coverage” model), or
  • a smaller number of more direct routes with higher frequencies (the “direct” model).

Modelling shows that the latter will minimise total travel time in most circumstances, as any extra time spent walking to and from routes is more than offset by lower waiting times and/or less time on the bus. However, in adverse climatic conditions or where many passengers are less time-sensitive or less able/willing to walk, the “direct” model may be less attractive.

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