Roads Economic Decision Model for the Economic Evaluation of Low Volume Roads : Software User Guide and Case Studies
This manual presents the Roads Economic Decision Model (RED) developed to improve the decision-making process for the development and maintenance of low-volume rural roads. The model performs an economic evaluation of road investments options using...
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| Format: | Working Paper |
| Language: | English en_US |
| Published: |
World Bank, Washington, DC
2014
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| Online Access: | http://documents.worldbank.org/curated/en/2004/07/6531710/roads-economic-decision-red-model-software-user-guide-case-studies http://hdl.handle.net/10986/17770 |
| Summary: | This manual presents the Roads Economic
Decision Model (RED) developed to improve the
decision-making process for the development and maintenance
of low-volume rural roads. The model performs an economic
evaluation of road investments options using the consumer
surplus approach and is customized to the characteristics
and needs of low-volume roads such as the high uncertainty
of the assessment of the model inputs, particularly the
traffic and condition of unpaved roads, the importance of
vehicle speeds for model validation, the need for a
comprehensive analysis of generated and induced traffic, and
the need to clearly define all accrued benefits. RED
computes benefits for normal, generated, induced, and
diverted traffic, and takes into account changes in road
length, condition, geometry, type, accidents, and days per
year when the passage of vehicles is further disrupted by a
highly deteriorated road condition (wet season). Users can
add to the analysis other benefits, such as non-motorized
traffic, social services and environmental impacts, if
computed separately. The model is presented on a series of
Excel 2000 workbooks that collect all user inputs, present
the results on an efficient manner and performs sensitivity,
switching values and risk analyses. |
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