Road users are required to use vignettes which are divided into toll classes (Class 1, 2A, 2B). Which vehicles belong to which toll classes is often unclear and is left to the interpretation of the regulations, which are unclear or interpreted by DARS employees in their own way, which results in the user not knowing which vignette is appropriate. In view of the problem, this has been partially solved by the list of measured vehicles for classes 2A and 2B and these users are also entitled to reimbursement in case of using the wrong vignette. The problem occurs between Class 1 and 2A, in which case users are not entitled to reimbursement even though the user consults the DARS call centre before purchase and is advised to purchase what turns out to be an inappropriate vignette due to unclear regulations. I suggest that DARS should also list on its website and in a prominent place the measured vehicles for single-track motor vehicles and allow these users to be reimbursed also in case it is unclear which vignette is appropriate for their vehicle. At the same time, this list would be of great help to DARS staff in advising road users.