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Guidance: TAG unit A5-4 marginal external costs

Department For Transport

October 22
14:10 2019

TAG unit A5-4 marginal external costs

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Marginal external costs: November 2019 forthcoming change

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Marginal external cost summary tables: November 2019 forthcoming change

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Details

Information on the marginal external costs method which is based on the change in various external costs such as congestion, air pollution, noise, infrastructure and accidents. The marginal external costs method is the used to estimate the benefits of reducing congestion in the absence of a multi-modal model.

The previous version of this unit was TAG unit A5-4 marginal external costs, July 2017.

TAG provides information on the role of transport modelling and appraisal, and how the transport appraisal process supports the development of investment decisions to support a business case.

Published 31 May 2018
Last updated 22 October 2019 +show all updates
  1. October 2019 forthcoming changes document added.
  2. First published.

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