New Steps in the Assessment of Transport and Traffic Management Measures
Jan Kiel, Panteia BV, Arnoud Muizer, Panteai BV, Henk Taale, Rijkswaterstaat
In our paper we present a simple method which combines CBA and MCA in order to take the impact of transport measures on soft factors into account.
Impact assessments or cost-benefit analyses are common tools to assess the impacts of transport and traffic management measures. For these tools or instruments different literature and guidance is available. One of the flaws of these instruments is, that they do not always take the soft impacts into account. The impact of measures on image, comfort, design, health or social cohesion. The problem with these soft impacts is that it is hard to quantify them. Furthermore, transport measures are often small in size. Think of providing access to industrial areas, parking facilities for bikes or rescheduling buses. For these measures we often know the costs, but not the full impacts.
In the Netherlands regional governments have budgets to take transport and traffic management measures of different kinds. They do so in collaboration with regional partners such as industry and citizens. Each stakeholder has different preferences. Some want optimal accessibility, some would like a safe neighbourhood, others prefer clean air. This raises the question how to make an optimal package of transport measures that suits all stakeholders and is yet cost effective.
Panteia and Rijkswaterstaat have looked at this issue and developed a method that is able to deal with the soft impacts, integrated with the impacts on accessibility, safety and sustainability. This includes the quantification of the costs and benefits for aspects such as accessibility, environment and safety. On top of this, the soft impacts are taken into account, using a scaling method. Furthermore, the interaction between the different policy measures is taken into account. The method combines the classic CBA with elements of MCA in a process in which different stakeholders are able to influence the final results. The paper presents an outline of this new method to combine the conventional CBA with aspects such as perception of measures.
Association for European Transport