Support & Contact – De Lijn General questions House Move Promotion On which buses and trams can I use my House Move Promotion trial travel pass? Published on October 21, 2020 13:51 The free trial travel pass is valid on all De Lijn buses and trams except for Limburg express bus lines 68, 178 and 179. Any questions about this subject?Fill in this form. Related articles How do I use my House Move Promotion trial pack? For some family members I don’t have the option of applying for a cambio and/or Blue-bike trial membership.