bus only lanes should be standard. One or two people in cars shouldn't be able to delay an entire line, nor should they get priority.
This is also mostly fixable, with signal priority. Except at complex intersections where different roads each have transit lines fighting for priority.
WFH. Every company implementing a RTO politic should be declined next time they try to get certified for some green-washing label. Especially when some government grants are tied to those certifications.
It happens all the time that one or two people on the bus itself (or, even worse, train) delay the whole line. The fundamental problem is inflexible public transit.