Possibilities of a DLR-experiment in the Netherlands : northern lights campaign : account of an analysis to enable statements concerning the duration and scope of an experiment on daytime running lights (DRL) in the northern provinces of the Netherlands

In order to study a number of uncertainties about the effectiveness of the use of daytime running lights (DRL), a test will be undertaken in a limited area in the north of the Netherlands. The Transportation and Traffic Research Department (DVK) of the Ministry of Transport has asked the SWOV to calculate - taking into account increasing use of DRL in the test area - the length of time such a experiment should continue before reliable statements about the effectiveness of DRL can be made. In addition, it was queried whether the influence of DRL on the safety of pedestrians and cyclists could be determined, given a certain experiment period. This report gives an account of the analysis conducted, which will form the basis of a recommendation on the value and reliability of statements to issue form an evaluation study conducted in the test area.