Yes, this is even an issue in places where there is good public transit like Zürich, Switzerland. There are sections where buses share the road and during rush

Yes, this is even an issue in places where there is good public transit like Zürich, Switzerland. There are sections where buses share the road and during rush hour it causes the busses to be off schedule. There is even talk to remove the fixed schedule for buses as this happens so frequently. Sadly a new law passed that forbids the removal of roads in order to provide more dedicated bus lanes. As there is so little place it will be impossible in most places. However buses are sharing light rail space now as well which can be paved yet not allow regular traffic in it.