Incremental steps are not personal EVs. They are diesel and electric buses. EVs eliminate 1 problem (tailpipe emissions) while creating 2 more (battery manufacturing, increased vehicle weight making road and tire wear worse, and making them more deadly - there’s others, take your pick) and not addressing the other hundred problems with car dependence.
Buses use the same infrastructure as cars. Bus stops are stupid cheap in comparison to anything else. And then, bus lanes can be implemented to prioritise buses and keep them from getting stuck in traffic.