Dynamic Traffic Management (DTM) is a means to increase road infrastructure efficiency. Decision-making about DTM in the Netherlands is hampered by a lack of knowledge of impacts, costs and benefits of network-wide DTM. A suitable evaluation methodology is required to gain this knowledge. The current evaluation methodology of Rijkswaterstaat is developed for evaluation of local DTM measures and may no longer be suitable to evaluate network-wide DTM.
In this report a new methodology for DTM evaluation is proposed, using a theory-based approach. The proposed evaluation methodology offers a step-by-step method to formulate relevant evaluation questions in a structured manner and these can be used to select appropriate evaluation methods, indicators and experimentation set-ups. Disturbing external influences on evaluation are explicitly taken into account in these selections.
The proposed evaluation methodology can be used a basis for the new evaluation guideline for DTM projects of Rijkswaterstaat. Not only DTM evaluation, but also DTM design will benefit from this.