Support & Contact – De Lijn General questions Try-out campaign Where can I find out more information about the try-out campaign for 12-year-olds (‘the mum/dad taxi service can retire’)? Published on June 11, 2020 12:36 All information about this promotion and our trial subscription can be found on our campaign page. Full details can be found at delijn.be/probeeractie. Any questions about this subject?Fill in this form. Related articles What do I need to do to benefit from a family discount? When will I receive my free vouchers? Am I eligible to receive free vouchers? Are you entitled to a preferential reimbursement (VT)? What should I do if I lose something?