Same in buses, every now and then you have deadly accidents, most deaths are due to people not using the belts and getting slammed around. It's one of the most easily avoidable death
Look at that one for example, the few people who had belt will most likely be fine, on the other hand people without belts got thrown around like ragdolls and many died: https://www.youtube.com/watch?v=ldfgEJpIgKM&rco=1
In East Asia bus systems are much better than they are in most other countries. Buses travel everywhere and if they enter highways they usually have seatbelts. But people still just avoid them because there are a lot of "don't follow safety" social hivemind ideas.
Look at that one for example, the few people who had belt will most likely be fine, on the other hand people without belts got thrown around like ragdolls and many died: https://www.youtube.com/watch?v=ldfgEJpIgKM&rco=1