If it’s fitted to the seat your sitting in it’s legal requirement to wearI didn't think it was compulsory to wear a seatbelt on a bus. What about standing passengers? The main reason the Knightswood Ailsas had seatbelts was because they did school runs. Most of the school runs had a rush hour passenger working tagged on to the diagram but it was common to see one or two out all day on the X6 and X7. I cannot recall what type of bus covered the other workings on those routes or whether they had seatbelts.