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The Design of Highway Intersections
Introduction A highway intersection is required to control conflicting and merging streams of traffic so…
Posted inHighway Engineering
The ‘level of service’ approach
Introduction ‘Level of service’ describes in a qualitative way the operational conditions for traffic from…
Posted inHighway Engineering
Speed-density relationship
In a situation where only one car is travelling along a stretch of highway, densities…
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Basic Elements of Highway Traffic Analysis
Introduction The functional effectiveness of a highway is measured in terms of its ability to…
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Highway CBA worked example
Introduction It is proposed to upgrade an existing single carriageway road to a dual carriageway…
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Use of economic indicators to assess basic economic viability
Once the two parameters of project life and discount rate are set in place, these…
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Economic life, residual value and the discount rate
A highway project is often complex and long term, with the costs and benefits associated…
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Identifying all relevant costs and benefits
The application of cost-benefit for project assessment in the highway area is made more complicated…
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Cost-benefit analysis (CBA)
Introduction Within Europe, the method usually adopted for the economic evaluation of highway schemes, termed…
Posted inHighway Engineering
Scheme Appraisal for Highway Projects
Introduction Once a transportation plan has been finalised and the demand along each of its…