A quick-scan appraisal method to determine cost-effectiveness of Traffic and Demand Management measures

This paper presents this quick-scan approach for assessing the cost-effectiveness of smaller and not-well demarcated transport measures that can be used as a first-scan while establishing packages to deal with certain transport problems. It adds to the available evaluation literature (see section 2) in relying on a combination of expert opinions...

Kostenoverschrijdingen in transportinfrastructuurprojecten in Nederland en wereldwijd: Kenmerken en determinanten van kostenoverschrijdingen

In Nederland komen kostenoverschrijdingen minder vaak voor en is de gemiddelde overschrijding lager dan in andere landen. Het grootste deel van de kostenoverschrijding komt voor in de fase voor de start van de bouw. De gemiddelde kostenoverschrijding is het kleinst voor spoorwegen gevolgd door wegen en kunstwerken. Spoorwegen en bruggen in...

Het ontstaan van lock-in in het besluitvormingsproces en de invloed daarvan op de projectprestatie van grootschalige transportinfrastructuurprojecten

Een belangrijk fenomeen dat kostenoverschrijdingen kan verklaren is lock-in. We definiëren lockin als de buitenmatige verbondenheid van besluitmakers aan een inefficiënt besluit. Dit kan op twee manieren invloed hebben op de mate van kostenoverschrijdingen. Ten eerste methodologisch: kostenoverschrijdingen worden berekend op basis van de...

Using value of statistical life for the ex ante evaluation of transport policy options: A discussion based on ethical theory

This paper aims to discuss a number of questions that are highly important for the ex ante evaluation of the safety impacts of transport policy options, from the perspective of ethical theory: (1) Is it morally OK to express prevention on acceptance of fatalities or risks in monetary terms? (2) How useful is the concept of the value of a...

Current issues in the Dutch CBA practice

In the Netherlands a guideline for carrying out a CBA for infrastructure projects (the so-called OEI-manual) was constructed in the year 2000. Since then a CBA in line with the OEI-manual became compulsory in the decision making process for all large infrastructure national projects. The aim of this research is to define the main problems in the...

Cost Overruns in Large-scale Transportation Infrastructure Projects: Explanations and Their Theoretical Embeddedness

Managing large-scale transportation infrastructure projects is difficult due to frequent misinformation about the costs which results in large cost overruns that often threaten the overall project viability. This paper investigates the explanations for cost overruns that are given in the literature. Overall, four categories of explanations can...

Noise valuation in ex-ante evaluations of major road and railroad projects

In many European countries, the impact of new road and railroad infrastructure is assessed by performing a cost-benefit analysis, monetising as many relevant effects as possible. Considering that noise is a major external effect of traffic, this paper will systematically review the guidelines for monetising noise in different European countries....